Every move counts in this award-winning game as players stake their territory, square by square. The simple rules take less than a minute to learn, yet the game has the depth to challenge beginners and experts alike, perfect for the whole family.

Grade Level:

Elementary

Middle

High

Content Area:

Math

Special Education

Play Time:

20 min.

Can you skillfully fill in your playing board so that all the differently shaped tiles fit perfectly without leaving any spaces?! If a piece doesn't fit precisely, slot it in the best you can because the game's not over yet.

Grade Level:

Elementary

Middle

High

Content Area:

Math

Special Education

Play Time:

20 min.

"FLATLAND" is based on Edwin A. Abbott's classic novel, *Flatland: A Romance of Many Dimensions.* Flatland is a world that exists entirely on a two-dimensional plane. All different kinds of shapes live, work and play in this world. The story follows Arthur Square (MARTIN SHEEN) and his curious granddaughter Hex (KRISTEN BELL).

Grade Level:

Elementary

Middle

Length:

00:35

The program demonstrates the following constructions in the context of a student creating a mobile to hang above a baby's cot: * Bisecting an angle * Perpendicular bisector of a line * Constructing a triangle using three known side lengths * Determine the center of gravity by constructing medians * Determine the inscribed circle of a triangle by constructing the angle bisectors * Determine the

Grade Level:

Elementary

Middle

Length:

00:30

In this *Cyberchase* video segment, Harry wants to visit his grandmother. He decides that the cheapest way for him to get there is to travel by unicycle, but he wonders if he can get there before dark. Using a line graph, he tries to predict the amount of time it will take to travel the twenty miles, assuming he travels at a constant speed. Once he sets out on his unicycle, he charts his progress on a new line graph. After the first hour he appears to be ahead of schedule, but he is not able to keep up the pace and soon finds himself falling behind.

In this video segment from *Cyberchase*, the CyberSquad must measure two differently-shaped parcels of land to determine which has a larger area. The CyberSquad uses tarps, fence posts, and finally a grid made out of rope to count squares and determine the area of each parcel.

Explore the relationships between the area equations for rectangles and triangles. This video focuses on modeling the area equations for a rectangle and triangle and talks how base and height differ from length and width.

This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers and is part of the Math at the Core: Middle School collection.

Uncover the secret behind the puzzling Monkey Around exhibit at the National Museum of Mathematics. This video focuses on the properties of rotations and challenges your critical thinking skills. This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers.

In this video segment from *Cyberchase,* Harry is snowboarding and wants to do a move on his snowboard known as a "360." He is not sure what exactly a "360" is, but a snowboard instructor teaches him about angles and snowboard moves. Harry finally creates his own snowboard version of a "360."

Use your spatial reasoning skills to calculate the surface area when given a 3D figure. This video focuses on a right rectangular prism and shows you how unit blocks can help you visualize, then calculate the surface area. This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers. This resource is part of the Math at the Core: Middle School collection.

Investigate some of the mathematical challenges Boston engineers had to deal with during the Central Artery Tunnel Project (the "Big Dig"). This video focuses on the irregular shape of the casting basin and the volume calculations required to make the casting basin work, taking math out of the classroom and into real world problem solving.

In this video from *Cyberchase*, Harry decides he needs to start a regular workout schedule. He uses a graph to record his progress. In the accompanying classroom activity, students play a ball-balancing game and record their attempts on a graph to build on the concepts presented in the video. This resource is part of the Math at the Core: Middle School Collection.

Whether flying a plane, figuring out the size of a tiered cake, or riding your bike, slope is important! Get excited about rise over run by viewing this math lesson that walks you through a few of the many resources available to help you understand the concept of slope from that are available from PBS LearningMedia. This lesson demonstrates interactives from the Math at the Core: Middle School collection and was hosted by PBS LearningMedia and Google's Connected Classrooms.

Learn how unit cubes can be used to model the solution for the volume of a 3D figure This video focuses on calculating the volume of a rectangular prism using the equation, length x width x height. This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers.

Learn how algebra can quickly determine the point where two lines intersect. This video focuses on setting linear equations equal to each other to find a common solution.

This video was submitted through the Innovation Math Challenge, a contest open to professional and nonprofessional producers and is part of the Math at the Core: Middle School collection.