Use attribute blocks and the following activity to focus student attention on attributes to solve a problem. Choose a block without students knowing which block it is. Give each student, pair of students, or other cooperative group a different block from the one you've chosen. Have them describe their block by its attributes
(e.g., thin, blue, small circle). Tell students how many attributes it has in common with the secret shape you've chosen. If your block is a small, thick, red triangle, you would tell the students that their block has one attribute in common with your secret shape. After three groups of students have shown their shapes and you've told them the number of attributes each of those shapes has in common with your secret shape, allow students to guess the secret shape.

Problem:

Place each of the following shapes in the correct place in the diagram below.