diff --git a/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/上册第四单元/6上图4-17.mix b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/上册第四单元/6上图4-17.mix
new file mode 100644
index 00000000..efc6d88d
--- /dev/null
+++ b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/上册第四单元/6上图4-17.mix	
@@ -0,0 +1 @@
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diff --git a/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第一单元/图1-12.mix b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第一单元/图1-12.mix
new file mode 100644
index 00000000..3d01e48d
--- /dev/null
+++ b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第一单元/图1-12.mix	
@@ -0,0 +1 @@
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diff --git a/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第一单元/图1-16.mix b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第一单元/图1-16.mix
new file mode 100644
index 00000000..335385f4
--- /dev/null
+++ b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第一单元/图1-16.mix	
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diff --git a/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第一单元/图1-22.mix b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第一单元/图1-22.mix
new file mode 100644
index 00000000..0414f6be
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diff --git a/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第三单元/图3-22.mix b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第三单元/图3-22.mix
new file mode 100644
index 00000000..2d4578ca
--- /dev/null
+++ b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第三单元/图3-22.mix	
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diff --git a/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第二单元/图2-7.mix b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第二单元/图2-7.mix
new file mode 100644
index 00000000..39703e2a
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+++ b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第二单元/图2-7.mix	
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diff --git a/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第二单元/第二单元任务三习题(P56).mix b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第二单元/第二单元任务三习题(P56).mix
new file mode 100644
index 00000000..15d452ab
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+++ b/boards/default_src/micropython_esp32c2/origin/examples/MixGo MINI/北师大版教材示例代码/六年级/下册第二单元/第二单元任务三习题(P56).mix	
@@ -0,0 +1 @@
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第三单元/3-12 MIXIO使用.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第三单元/3-12 MIXIO使用.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第三单元/3-2a 无线发送.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第三单元/3-2a 无线发送.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第三单元/3-2b 无线接收.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第三单元/3-2b 无线接收.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第三单元/3-3a 蓝牙主机.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第三单元/3-3a 蓝牙主机.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第三单元/3-3b 蓝牙从机.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第三单元/3-3b 蓝牙从机.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第三单元/3-4 HTTP协议.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第三单元/3-4 HTTP协议.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第三单元/3-5 MQTT协议.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第三单元/3-5 MQTT协议.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第二单元/2-11 RFID读取.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第二单元/2-11 RFID读取.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第二单元/2-16 WIFI扫描.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第二单元/2-16 WIFI扫描.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第二单元/2-5 楼道灯.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第二单元/2-5 楼道灯.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第四单元/4-10-11 MIXIO学生抢答.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第四单元/4-10-11 MIXIO学生抢答.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/上册第四单元/4-5 MIXIO学生点到.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/上册第四单元/4-5 MIXIO学生点到.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/下册第一单元/5-11 停车显示.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/下册第一单元/5-11 停车显示.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/下册第一单元/5-19 车位检测.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/下册第一单元/5-19 车位检测.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/下册第一单元/5-20 空位显示.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/下册第一单元/5-20 空位显示.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/下册第一单元/5-9 停车空位.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/下册第一单元/5-9 停车空位.mix
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rename to boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/下册第一单元/5-9 停车空位.mix
diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/下册第二单元/2-10 摔倒检测.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/下册第二单元/2-10 摔倒检测.mix
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rename to boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/下册第二单元/2-10 摔倒检测.mix
diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/下册第二单元/2-2 温度与光照.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/下册第二单元/2-2 温度与光照.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/下册第二单元/2-7 震动强度.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/下册第二单元/2-7 震动强度.mix
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rename to boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/八年级/下册第二单元/2-7 震动强度.mix
diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/上册第四单元/6上图4-17.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/上册第四单元/6上图4-17.mix
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第一单元/图1-12.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第一单元/图1-12.mix
new file mode 100644
index 00000000..e2f22a5b
--- /dev/null
+++ b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第一单元/图1-12.mix	
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第一单元/图1-16.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第一单元/图1-16.mix
new file mode 100644
index 00000000..a6e5c697
--- /dev/null
+++ b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第一单元/图1-16.mix	
@@ -0,0 +1 @@
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第一单元/图1-22.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第一单元/图1-22.mix
new file mode 100644
index 00000000..47916eb0
--- /dev/null
+++ b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第一单元/图1-22.mix	
@@ -0,0 +1 @@
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第三单元/图3-22.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第三单元/图3-22.mix
new file mode 100644
index 00000000..2df54787
--- /dev/null
+++ b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第三单元/图3-22.mix	
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第二单元/图2-7.mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第二单元/图2-7.mix
new file mode 100644
index 00000000..9195b194
--- /dev/null
+++ b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第二单元/图2-7.mix	
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diff --git a/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第二单元/第二单元任务三习题(P56).mix b/boards/default_src/micropython_esp32c3/origin/examples/MixGo CC/北师大版教材示例代码/六年级/下册第二单元/第二单元任务三习题(P56).mix
new file mode 100644
index 00000000..0ae45ed9
--- /dev/null
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name="NUM">0</field></block></value></block></statement></block></next></block></statement></block></next></block></next></block></next></block></next></block></next></block></statement></block></next></block></next></block></next></block></xml><config>{}</config><code>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</code>
\ No newline at end of file
diff --git a/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/5下P4算力v2.html b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/5下P4算力v2.html
new file mode 100644
index 00000000..7525a325
--- /dev/null
+++ b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/5下P4算力v2.html
@@ -0,0 +1,183 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>算力大比拼</title>
+    <style>
+        body {
+            font-family: Arial, sans-serif;
+            max-width: 600px;
+            margin: 0 auto;
+            padding: 20px;
+            text-align: center;
+        }
+        .display {
+            font-size: 24px;
+            margin: 20px 0;
+            padding: 10px;
+            border: 1px solid #ccc;
+            border-radius: 5px;
+            min-height: 30px;
+        }
+        .button-container {
+            display: flex;
+            justify-content: center;
+            gap: 10px;
+            margin-top: 20px;
+        }
+        button {
+            padding: 10px 20px;
+            font-size: 16px;
+            cursor: pointer;
+            background-color: #4CAF50;
+            color: white;
+            border: none;
+            border-radius: 5px;
+        }
+        button:hover {
+            opacity: 0.9;
+        }
+        button:disabled {
+            background-color: #cccccc;
+            cursor: not-allowed;
+        }
+        #stopBtn {
+            background-color: #f44336;
+        }
+        #clearBtn {
+            background-color: #2196F3;
+        }
+    </style>
+</head>
+<body>
+    <h1>算力大比拼</h1>
+    
+    <div class="display" id="equation">准备开始...</div>
+    <div class="display" id="result">-</div>
+    <div class="display" id="timeElapsed">时间: 0.000秒</div>
+    <div class="display" id="numberOfCalculations">计算次数: 0</div>
+    
+    <div class="button-container">
+        <button id="startBtn">开始</button>
+        <button id="stopBtn" disabled>停止</button>
+        <button id="clearBtn">清空</button>
+    </div>
+
+    <script>
+        class Calculator {
+            constructor() {
+                this.equationElement = document.getElementById('equation');
+                this.resultElement = document.getElementById('result');
+                this.timeElapsedElement = document.getElementById('timeElapsed');
+                this.numberOfCalculationsElement = document.getElementById('numberOfCalculations');
+                this.startBtn = document.getElementById('startBtn');
+                this.stopBtn = document.getElementById('stopBtn');
+                this.clearBtn = document.getElementById('clearBtn');
+                
+                this.running = false;
+                this.startTime = 0;
+                this.pausedTime = 0;
+                this.totalElapsedTime = 0;
+                this.numberOfCalculationsValue = 0;
+                this.lastUpdateTime = 0;
+                this.currentIndex = 0;
+                
+                // 固定的四道题目表达式
+                this.questionBank = [
+                    "72 + 36",
+                    "678 - 123",
+                    "16 * 12",
+                    "132 / 11"
+                ];
+                
+                this.setupEventListeners();
+            }
+            
+            setupEventListeners() {
+                this.startBtn.addEventListener('click', () => this.start());
+                this.stopBtn.addEventListener('click', () => this.stop());
+                this.clearBtn.addEventListener('click', () => this.clear());
+            }
+            
+            start() {
+                if (this.running) return;
+                
+                this.running = true;
+                this.startBtn.disabled = true;
+                this.stopBtn.disabled = false;
+                
+                const now = performance.now();
+                if (this.pausedTime > 0) {
+                    this.startTime = now - this.pausedTime;
+                    this.pausedTime = 0;
+                } else {
+                    this.startTime = now;
+                    this.totalElapsedTime = 0;
+                    this.numberOfCalculationsValue = 0;
+                }
+                
+                this.lastUpdateTime = now;
+                
+                this.calculateLoop();
+                this.uiLoop();
+            }
+            
+            calculateLoop() {
+                if (!this.running) return;
+                
+                const batchSize = 999;
+                for (let i = 0; i < batchSize; i++) {
+                    const equation = this.questionBank[this.currentIndex];
+                    const result = eval(equation); 
+                    this.numberOfCalculationsValue++;
+                    this.currentIndex = (this.currentIndex + 1) % 4;
+                }
+                
+                requestAnimationFrame(() => this.calculateLoop());
+            }
+            
+            uiLoop() {
+                if (!this.running) return;
+                
+                const now = performance.now();
+                this.totalElapsedTime = (now - this.startTime) / 1000;
+                
+                const currentEquation = this.questionBank[this.currentIndex];
+                this.equationElement.textContent = currentEquation;
+                this.resultElement.textContent = eval(currentEquation);
+                this.timeElapsedElement.textContent = `时间: ${this.totalElapsedTime.toFixed(3)}秒`;
+                this.numberOfCalculationsElement.textContent = `计算次数: ${this.numberOfCalculationsValue}`;
+                
+                // 每0.2秒更新一次UI
+                setTimeout(() => this.uiLoop(), 200);
+            }
+            
+            stop() {
+                if (!this.running) return;
+                
+                this.running = false;
+                this.startBtn.disabled = false;
+                this.stopBtn.disabled = true;
+                
+                this.pausedTime = performance.now() - this.startTime;
+            }
+            
+            clear() {
+                this.stop();
+                this.equationElement.textContent = '准备开始...';
+                this.resultElement.textContent = '-';
+                this.timeElapsedElement.textContent = '时间: 0.000秒';
+                this.numberOfCalculationsValue = 0;
+                this.numberOfCalculationsElement.textContent = '计算次数: 0';
+                this.pausedTime = 0;
+                this.totalElapsedTime = 0;
+                this.currentIndex = 0;
+            }
+        }
+        
+        // 初始化计算器
+        const calculator = new Calculator();
+    </script>
+</body>
+</html>
\ No newline at end of file
diff --git a/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/P12鸡兔同笼.mix b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/P12鸡兔同笼.mix
new file mode 100644
index 00000000..1f7b0002
--- /dev/null
+++ b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/P12鸡兔同笼.mix
@@ -0,0 +1 @@
+<xml version="Mixly 2.0 rc4" board="Python 3 Lite@Python 3 Lite"><block type="variables_set" id="Q[{^|2^P.#[qb/nzvvw+" x="-554" y="-458"><field name="VAR">x</field><value name="VALUE"><block type="math_number" id=",r2=0Ew-`5OHTqkk/8(Y"><field name="NUM">0</field></block></value><next><block type="variables_set" id="bh]nH_HKP.94n}^E7w|6"><field name="VAR">y</field><value name="VALUE"><block type="math_number" id="~KE)pAJjx:`[F{|KhHIW"><field name="NUM">0</field></block></value><next><block type="controls_whileUntil" id="cx!M$HWg[9H:^GFh4Ng0"><field name="MODE">WHILE</field><value name="BOOL"><shadow type="logic_boolean" id=",Hxl2[S7SL4$=/T:-6A-"><field name="BOOL">TRUE</field></shadow><block type="logic_compare" id="o(4zw(tA6+5V$U{]v7-!"><field name="OP">LTE</field><value name="A"><block type="variables_get" id="xgyV{S`DGnT|M4y|s~6_"><field name="VAR">x</field></block></value><value name="B"><block type="math_number" id="Hw8SrK_u#KH,tq?|9ImR"><field name="NUM">35</field></block></value></block></value><statement name="DO"><block type="variables_set" id="KL!u.juZ2)q?!Do1taG4"><field name="VAR">y</field><value name="VALUE"><block type="math_arithmetic" id="tt}!Y]*:kVSOXr[bvATU"><field name="OP">MINUS</field><value name="A"><shadow type="math_number" id="^y6TPe#bo.1D50=M+9fI"><field name="NUM">35</field></shadow></value><value name="B"><shadow type="math_number" id="izmGz+)O0n1;)gL7lSbR"><field name="NUM">1</field></shadow><block type="variables_get" id="w;tiXN9/QL2RSY(uh]8v"><field name="VAR">x</field></block></value></block></value><next><block type="controls_if" id="`;5kzi*SV`fI!?xD,hPg"><value name="IF0"><block type="logic_compare" id="4l0]hlo(jI0X@j{*rQz|"><field name="OP">EQ</field><value name="A"><block type="math_arithmetic" id="qoBJ4E$!BpaRc),JvQ9^"><field name="OP">ADD</field><value name="A"><shadow type="math_number" id="QTDk(L+j)n7/jMP,wNam"><field name="NUM">1</field></shadow><block type="math_arithmetic" id="PqH9B;xe7OK`8zwbQUc$"><field name="OP">MULTIPLY</field><value name="A"><shadow type="math_number" id="t~[T=l]LgMW=e-YG^V6|"><field name="NUM">2</field></shadow></value><value name="B"><shadow type="math_number" id="w3GU[BlUNUTr{V=gl8WR"><field name="NUM">1</field></shadow><block type="variables_get" id="I0ZAkq!mOIRa4{@+$=J`"><field name="VAR">x</field></block></value></block></value><value name="B"><shadow type="math_number" id="vBg5=9nqm4$h(Uk.vguS"><field name="NUM">1</field></shadow><block type="math_arithmetic" id="Df=/Dd5xqoJOnaT95@Px"><field name="OP">MULTIPLY</field><value name="A"><shadow type="math_number" id="sfiVAcFZSNU}0hSmn2r."><field name="NUM">4</field></shadow></value><value name="B"><shadow type="math_number" id="h!UB$?mXT5y+Z?:3^YJ#"><field name="NUM">1</field></shadow><block type="variables_get" id="Zg$n*UFkg5C/N:M?:njK"><field name="VAR">y</field></block></value></block></value></block></value><value name="B"><block type="math_number" id="^wX*uGffqf8i$Q6ZIY4Y"><field name="NUM">94</field></block></value></block></value><statement name="DO0"><block type="inout_print" id=",pA*g!{1anxUYz/[ZFwO"><value name="VAR"><shadow type="text" id="8HEvMfvowik#l3R!}:KK"><field name="TEXT">Hello</field></shadow><block type="variables_get" id="g2}g(EasbzlHYC-PF3:S"><field name="VAR">x</field></block></value><next><block type="inout_print" id="CZ/{jnIa[NMA)kz#Y+iw"><value name="VAR"><shadow type="text" id="5=TXE8`^C~RW[0WhtMJ,"><field name="TEXT">Hello</field></shadow><block type="variables_get" id="fN~v2G4}?V9_fi_#sG@5"><field name="VAR">y</field></block></value></block></next></block></statement><next><block type="variables_set" id="58WXOKX(TL,uW_^FIR?:"><field name="VAR">x</field><value name="VALUE"><block type="math_arithmetic" id="#4J]frp,D~QCX]7u1~cu"><field name="OP">ADD</field><value name="A"><shadow type="math_number" id="oKVBE-wX8j:LE-AQ7qJe"><field name="NUM">1</field></shadow><block type="variables_get" id=")wigfGS3B@OwlFrriU(5"><field name="VAR">x</field></block></value><value name="B"><shadow type="math_number" id="~VnxlA9,3R)w;0CMK2JL"><field name="NUM">1</field></shadow></value></block></value></block></next></block></next></block></statement></block></next></block></next></block></xml><config>{}</config><code>eCA9IDAKeSA9IDAKd2hpbGUgeCA8PSAzNToKICAgIHkgPSAzNSAtIHgKICAgIGlmIDIgKiB4ICsgNCAqIHkgPT0gOTQ6CiAgICAgICAgcHJpbnQoeCkKICAgICAgICBwcmludCh5KQogICAgeCA9IHggKyAxCg==</code>
\ No newline at end of file
diff --git a/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/P6加减乘除我来移.py b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/P6加减乘除我来移.py
new file mode 100644
index 00000000..4db086e2
--- /dev/null
+++ b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/P6加减乘除我来移.py
@@ -0,0 +1,51 @@
+import itertools
+import time
+
+def calculate(numbers, operators):
+    # 计算四个数与三个运算符的组合是否能得到24
+    formula = f"{numbers[0]} {operators[0]} {numbers[1]} {operators[1]} {numbers[2]} {operators[2]} {numbers[3]}"
+    result = eval(formula)
+    if result == 24:
+        return True, formula
+    else:
+        return False, result
+
+def solve(nums):
+    start_time = time.time()  # 记录开始时间
+    count = 0  # 记录枚举次数
+    
+
+    # 枚举三个运算符的所有排列组合（有重复）
+    for ops in itertools.product(["+", "-", "*", "/"], repeat=3):
+        count += 1
+        success, result = calculate(nums, ops)
+        if success:
+            print(f"第{count}次枚举成功：{nums[0]} {ops[0]} {nums[1]} {ops[1]} {nums[2]} {ops[2]} {nums[3]} = 24")
+            print(f"共枚举{count}次，耗时{time.time()-start_time:.3f}秒。")
+            return
+        else:
+            print(f"第{count}次枚举失败：{nums[0]} {ops[0]} {nums[1]} {ops[1]} {nums[2]} {ops[2]} {nums[3]} = {result}")
+    
+    print("无解")
+    print(f"共枚举{count}次，耗时{time.time()-start_time:.3f}秒。")
+
+def get_numbers_from_user():
+    numbers = []
+    for i in range(4):
+        while True:
+            try:
+                num = int(input(f"请输入第{i+1}个数字："))
+                numbers.append(num)
+                break
+            except ValueError:
+                print("输入错误，请重新输入整数。")
+    return numbers
+
+def main():
+    print("欢迎使用24点计算器！")
+    numbers = get_numbers_from_user()
+    print("开始求解...")
+    solve(numbers)
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-14.mix b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-14.mix
new file mode 100644
index 00000000..52f1672d
--- /dev/null
+++ b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-14.mix
@@ -0,0 +1 @@
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diff --git a/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-20.mix b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-20.mix
new file mode 100644
index 00000000..69417610
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+++ b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-20.mix
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diff --git a/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-4.mix b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-4.mix
new file mode 100644
index 00000000..2d76b92f
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+++ b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-4.mix
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diff --git a/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-7.mix b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第一单元/图1-7.mix
new file mode 100644
index 00000000..d14dbdf1
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diff --git a/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第二单元/图2-9.mix b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第二单元/图2-9.mix
new file mode 100644
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+++ b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第二单元/图2-9.mix
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diff --git a/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第四单元/图4-19&21&22.mix b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第四单元/图4-19&21&22.mix
new file mode 100644
index 00000000..81295f8a
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\ No newline at end of file
diff --git a/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第四单元/图4-3.mix b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第四单元/图4-3.mix
new file mode 100644
index 00000000..25041992
--- /dev/null
+++ b/boards/default_src/python_skulpt/origin/examples/北师大版教材示例代码/五下第四单元/图4-3.mix
@@ -0,0 +1 @@
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\ No newline at end of file