# 3.10 表達式的比較 Comparing Expressions

STEM lessons + blocks

## Students will explore the result of expressions that make use of numerical values and parentheses.

Students will write expressions in SAM Blockly and comparing the results of expressions. Lesson 3.9 Describing Expressions is a useful prerequisite to this lesson.

## 在本課程中，學生將探索使用數值和括號的表達式的結果。

學生將在SAM Blockly中編寫表達式並比較表達式的結果。第3.9課描述表達式是本課程的有用先決條件。

• 45/90 minutes Comparing Expressions  - Teacher Lesson Plan with notes (script) on lesson PowerPoint
• Comparing Expressions-  Teaching PowerPoint
• Comparing Expressions- Student Workbook (worksheet)

What is SAM Labs? (1 min)

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Webinar: How to use SAM Labs in the classroom? (30 mins)

SAM Blockly Software blocks used:

SAM Labs in the classroom videos   - see 14 videos here

The following tutorial, though is not directly related to this lesson, will give you a good feel of how SAM Labs works.

5 training videos on SAM Blockly

The SAM Labs approach provides concrete solutions to link Computational Thinking to Coding in a non-technical, friendly approach for all teachers and learners.

See this document:   SAM Steam approach and computational thinking

References:

• BrainPOP movies/quizzes and games on Computational Thinking, Programming (coding), STEM and more.   These are good resources for teachers and students to clarify the meaning of key concepts.   Contact us if you like to have a trial.

BrainPOP Jr:  Computational Thinking Explained

BrainPOP Jr.

## Want to try some Cool, Crazy ideas that kids, adult, everyone loves?  Check the followings ideas guide from SAM Labs:

The Book of Crazy Cool Ideas

To see the step-by-step video on how to connect the blocks, please click blow:

1. Traffic light 交通指示燈 (easy, 1 player, gadget)
2. Kaleidoscope 萬花筒 (easy, multi-player, gadget)
3. Pattern-Bot  繪畫機械人(medium, multi-player, home hack)
4. Door Prank 惡作劇之門  (easy, 1 player, home hack)
5. Bridge 起動式橋樑 (medium, multi-player, gadget)
6. Flipbook 翻書動畫 (medium, 1 player, gadget)
7. Stirring Machine 攪拌機 (easy, 1 player, home hack)
8. Alarm 鬧鐘 (medium, 1 player, home hack)
1. Flashlight 史詩火炬 (medium, 1 player, gadget)
2. SyncDancers 同步舞者 (easy, multi-player, gadget)
3. Smart Watch 智能手錶 (medium, 1 player, gadget)
4. Pinball 彈珠球 (medium, multi-player, game)
5. Conductor 指揮者 (easy, 1 player, game)
6. Football game 足球比賽 (medium, multi-player, game)
7. Gameshow button 遊戲按鈕 (medium, multi-player, game)
8. Drawing Machine 繪圖機 (hard, 1 player, home hack)

Under the AiTLE-ETC TestBed Programme 5.0 (STEM / STEAM Lesson Plan + Tools), 1 school has tried out this lesson plan during the trial period from Oct 2018 to Dec 2019.

This school is:

 Other Lessons tried Lok Sin Tong Leung Kau Kui College (樂善堂梁銶琚書院 ) 1.11 SAM Safe

The school did not share in the LTE 2018.