Objective
By the end of this lesson, the student will be able to apply arithmetic concepts to solve engineering-related problems.
Materials and Prep
- Paper and pencil
- Calculator (optional)
- Basic understanding of arithmetic operations (addition, subtraction, multiplication, division)
Activities
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Activity 1: Building Bridges
Challenge the student to design a bridge using simple geometric shapes (rectangles, triangles) and calculate the total length of the bridge. They should consider the number of sections, the length of each section, and any additional supports needed.
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Activity 2: Tower Construction
Ask the student to build a tower using different materials (e.g., blocks, straws, toothpicks) and calculate the height of the tower. They should apply the concepts of measurement, addition, and subtraction to determine the tower's height.
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Activity 3: Load Capacity
Provide the student with different objects of varying weights (e.g., books, small weights) and challenge them to design a structure that can support the maximum weight. They should calculate the total weight of the objects and consider the distribution of weight to ensure the structure's stability.
Eighth Grade Talking Points
- "Engineering is a field that applies scientific and mathematical principles to design and build structures, machines, and systems."
- "Arithmetic is an essential skill for engineers as it helps them make accurate calculations and measurements."
- "In bridge design, engineers need to consider the total length of the bridge, the number of sections, and the materials used to ensure its stability."
- "When constructing a tower, engineers need to calculate the height by adding the lengths of each section or subtracting the height of the base from the total height."
- "Load capacity refers to the maximum weight a structure can support without collapsing. Engineers must calculate the total weight of the objects and distribute the weight evenly to ensure stability."
- "By applying arithmetic concepts, engineers can solve real-world problems and create safe and efficient structures."