# Surf for More Math

## Lesson 5 - Sorting 2-D Shapes

To encourage students to have fun on the Web while learning about Sorting
2-D Shapes, here are some games and interactive activities they can
do on their own or in pairs.

**Goal **

Compare and sort 2-D shapes.

**Builds Upon **

Student Book pages 184-185

**Instructions for Use **

Shape
Investigator lets students compare and sort 2-D shapes.

To use Shape Investigator, drag and drop a shape
into the play area. To rotate a shape, click on it. Shapes can be combined
at the corners and snapped together. To change the colour of a shape,
click a colour in the upper right palette and click on the shape in
the play area. To move the picture, click the arrows on the red target
icon to move up, down, right or left. Use the magnifying glasses at
the bottom left to make the shapes larger or smaller. Use the red arrow
to undo a move on the play area and the green arrow to redo the move.
Drag any shape from the play area to delete it. Use the 'Clear' Button
to start a new picture.

Shape
Sorter prompts students sort and classify objects using a Venn diagram.

There are two ways to use Shape Sorter - Guess
the Rule, or Make the Rule. Both ways students can use a single circle,
two non-overlapping circles, or two overlapping circles. Click on either
button at the left of the screen to choose which one to play.

To use Guess the Rule, the program creates a rule for students to try
to figure out. Click and drag different colored shapes into the circle(s).
Try to guess the rule based on which shapes and colors are accepted
or rejected. Have students guess the rule from the pull-down menu and
then click on the "Check Rule" button.

To use Make the Rule, have students make the rule for the circle(s)
and then place the shapes in the appropriate location(s). Use the pull
down menus to set the rule for each circle. Then click the "Set
Rule" button to continue. Drag each of the shapes to their appropriate
location in the Venn diagram. When the shapes are all in the correct
locations, a message appears to indicate the game is finished.