Lesson 3.5 Structures (Team Player's Round)

1. What can you say about the structure of parallelogram?

• a. strong

• b. weak

2. Which structure has the most number of toothpicks?

• a. parallelogram

• b. tetrahedron

3. How many toothpicks were used to build 1 tetrahedron?

• a. 6

• b. 12

4. Tick 3 properties of a tetrahedron?

• Stiffness

• Stability

• Strong support

• weak

• wobbly

5. In this investigation, what is the experimental group factor or the factor you change in the experiment?

• a. Type of connectors (clay/gummies)

• b. Number of toothpicks

6. State the conclusion of your investigation: "I therefore conclude that ___________ is a strong structure, because it can ___________________ even if it’s made only of fewer number of toothpicks.

• a. [tetrahedron] / [support heavy load]

• b. [parallelogram] / [support some load]

7. Look at this structure of Bahrain World Trade Centre, is this strong or weak? Why?

After learning about structures and you look around, can you now tell whether a building is stable and strong?

Choose happy face: "Yes, I can confidently tell".

Choose with question mark face: "No, I need more practice".

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If you need more practice, which concept you need to understand more?

• about tetrahedron

• about parallelogram