Week 8

Week 8 Lesson 1: Add a Clue

Students use their Geoboards to create clues that will complete riddles. In this activity the students have the opportunity to focus on the attributes of geometric figures. Students will use deductive reasoning to refine riddle clues. They will become familiar with the language of geometry. Working in pairs students will each solve a riddle. Once they come up with their own answers to the riddles they will compare answers. Then they each have to add one more clue so that their shape will be the only solution. This activity helps children develop logical reasoning skills.

Week 8 Lesson 2: Shape Puzzles

Students investigate the various ways a particular rectangle can be divided into triangles, rectangles and squares then use their smaller shapes to make and solve shape puzzles. In this activity students have the opportunity to describe shapes using geometric terms. Students also discover some similarities and differences among squares, triangles and rectangles. Working in groups each student uses one rubber band to make a rectangle on a Geoboard. Then they use one more rubber band to divide the rectangle into two or three shapes. Each group copies their shape onto geodot paper which they cut out and place in an envelope. They switch with other groups and solve each others puzzles. This activity develops student’s ability to visualize space and divided geometric shapes in different ways.