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.

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.

This step-by-step demonstration teaches students to construct a line parallel to another through a given point.

Learn what a conjunction is and why it is important to know what a conjunction is when using logic to solve mathematical problems. This website includes examples of the conjunction "and" used in mathematical sentences and a "truth table."

What is a "Disjunction"? What does "or" mean? This website answers these questions and provides examples of disjunctions used in mathematical sentences and problems.

At this website, learn terms "Conditional," and "Implication," and their relationship to mathematics and logic. Includes examples of "If, then," sentences that are both "True," and "False," as well as a "Truth table."

Test your logic and knowledge of conditionals, biconditionals, negations, conjunctions, and disjunctions in this twelve-question quiz. Answer each question on your own, then see what the answer and the reasoning behind the answer are.

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.