This interactive Flash game, played on a dot grid, offers an opportunity to practice visualizing squares and angles and also encourages students to use systematic strategies. The object is to select the four corners of a square in some size and orientation. The student can play against the computer or with another student. The dimensions of the grid can be adjusted. The student can opt to see the outline of a square once formed. The Teachers' Notes page offers suggestions for implementation, discussion questions, ideas for extension and support, and links to related activities.

This activity has students experiment with turning through angles in a conceptual, qualitative way. It can be used prior to studying angles quantitatively. Students are given descriptions of physical phenomena to emulate on either the included Flash applet or a hands-on manipulative. They rotate colored disks in a circle to mimic turns and angles. The Teachers' Notes page includes suggestions for implementation, discussion questions and instructions for making the manipulative.

This is a one-slide interactive activity where students write equations based on their knowledge of complementary and supplementary angles.

Learn how to add vectors. Drag vectors onto a graph, change their length and angle, and sum them together. The magnitude, angle, and components of each vector can be displayed in several formats.

In this Cyberchase video segment, Harry tries to snowboard and learns how to measure and identify many common angles.

This activity asks students to visualize shapes, paying close attention to the definitions of special polygons. Learners are given a sheet of isometric grid paper and asked to find and sketch 12 specific shapes. Ideas for implementation, extension and support are included along with printable grids and shape definitions.