Practice telling if shapes are divided into 2 or 4 equal sections. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.

Find area of rectangles and squares by multiplying side lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice finding the area of rectangles by counting unit square. Create rectangles with a given area by covering unit squares. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...

Estimate the size of angles when given a picture or a situation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

This tutorial includes a video, questions and explanations around using unit squares to see why multiplying side-lengths can also find the area of rectangles.

Use area models to represent the distributive property in finding area of rectangles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Compare the amount of unit squares that cover figures. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, or receive hints related to the concept of area.

Compare the areas of rectangles represented in images or contexts. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this video segment from Cyberchase, Bianca injures her ankle while skateboarding and is confined to her bed. She has trouble reaching a few objects from her bed until her friend gives her a device made up of collapsible...

The CyberSquad builds a raft out of squares in order to cross a river in this Cyberchase video [2:05] segment.

In this video segment from Cyberchase, Harry uses tessellations to wallpaper his apartment.

Students take a quiz assessing knowledge of perimeter and units of perimeter. The quiz consists of eight questions, and a results summary is shown at the end.

Find the treasure hidden at an intersection in the city. Use the clues. Read the instructions then scroll to the bottom and click "hide the treasure".

Measure the lengths and diagonals of three squares with a ruler. Look over your measurements and try to come up with a rule of thumb for estimating the length of a diagonal if you know the length of a side.

This step-by-step tutorial teaches students how to construct a bisector of a segment and the bisector of an angle.

This site provides a step-by-step method to construct congruent segments and angles with a straight edge and compass.

This step-by-step method teaches students to construct a perpendicular to a line through a point on--or off--the initial line using compass and straight edge.

This intuitive explanation shows how to determine if an object has point symmetry. The site offers examples of objects with point symmetry.

Fun graphics and realistic problems in point symmetry for students to solve and check.

In this exercise, students practice identifying angle types. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this exercise, students practice measuring angles. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Practice identifying quadrilaterals, pentagons, hexagons, and octagons. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, or receive hints.

Practice identifying symmetrical shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Identify the parts of 3D shapes in this assessment.