- to begin to develop a sense of area on the geoboard
- to develop a working knowledge of order attributes (e.g. between) with respect to area of squares
- to experiment with geometric pattern making
5 x 5geoboards (the kind that fit together to make a 10 x 10geoboard) and rubber bands (various sizes and colors)
- at least five geoboards for the teacher and one for each student
5 x 5geoboard dot paper (one sheet for each student) 10 x 10geoboard dot paper (for extended activities)
- overhead projector; transparent geoboard or dot paper (with marking pens)
- With one rubber band, make a square on your geoboard. What is its area?
- Find the square on your geoboard with smallest area.
- Find the square on your geoboard with next smallest area.
- Find the square on your geoboard with largest area.
Find all possible squares on a
5 x 5geoboard. (There is a total of 8 such squares.)
Order each of the squares in the main activity by area. (In order, the 8 squares have area 1, 2, 4, 5, 8, 9, 10, and 16 square units.)
- On a
5 x 5geoboard, find the square with next to largest area.
- Find a square with area between 4 and 9 square units. Can you find another square with area between 4 and 9 square units?
- What is the area of the shaded region below?
- Find the perimeter of each of the squares in the main activity.
- On a
10 x 10geoboard, make a square using each of the line segments in Lesson 2. Which of these squares do not fit on a 5 x 5geoboard?
- Continue the pattern below on a
10 x 10geoboard and complete the following table:
- Continue these patterns on a
10 x 10geoboard:
- Order each of the squares in the previous activity by area.
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