Day 15-Minutes

Investigating Area by Folding Paper

From Mark Driscoll's Fostering Geometric Thinking

Investigating Area

• For each problem, start with a square sheet of paper and make folds in the sheet of paper to construct a new shape, then explain how you know the shape you constructed has the specified area.

• Construct a square with exactly 1/4 the area of the original square. Explain how you know it has 1/4 the area.

Day 25-Minutes

Investigating Area by Folding Paper

From Mark Driscoll's Fostering Geometric Thinking

Investigating Area

• For each problem, start with a square sheet of paper and make folds in the sheet of paper to construct a new shape, then explain how you know the shape you constructed has the specified area.

• Construct a triangle with exactly 1/4 the area of the original square. Explain how you know it has 1/4 the area.

Day 35-Minutes

Investigating Area by Folding Paper

From Mark Driscoll's Fostering Geometric Thinking

Investigating Area• For each problem, start with a square sheet

of paper and make folds in the sheet of paper to construct a new shape, then explain how you know the shape you constructed has the specified area.

• Construct another triangle with exactly 1/4 the area of the original square that is not congruent to the previous triangle you constructed. Explain how you know it has 1/4 the area.

Day 45-Minutes

Investigating Area by Folding Paper

From Mark Driscoll's Fostering Geometric Thinking

Investigating Area

• For each problem, start with a square sheet of paper and make folds in the sheet of paper to construct a new shape, then explain how you know the shape you constructed has the specified area.

• Construct a square with exactly 1/2 the area of the original square. Explain how you know it has 1/2 the area.

Day 55-Minutes

Investigating Area by Folding Paper

From Mark Driscoll's Fostering Geometric Thinking

Investigating Area• For each problem, start with a square sheet

of paper and make folds in the sheet of paper to construct a new shape, then explain how you know the shape you constructed has the specified area.

• Construct another square with exactly 1/2 the area of the original square that is located in one of the four corners of the original square. Explain how you know it has 1/2 the area.