## Expand/Collapse Math Games and Videos for the Common Core

The Mathematics Common Core State Standards (CCSSM) focus on what students should understand and be able to do in their study of mathematics. These standards define the knowledge and skills students should have within their K-12 education careers so that they will graduate high school able to succeed in entry-level, credit-bearing academic college courses and in workforce training programs.

The videos and games included in this collection are intended to support these math standards in a fun and engaging way.

• ## Meerkatcher | Multiply Fractions with Unlike Denominators

The rascally meerkat gang is eating all the food in the zoo. Multiply fractions to feed the animals and catch those 'kats! In this activity, students will focus on multiplying fractions, starting with single-digit denominators and working up. This activity will include explanations of how the formula works.

• ## Meerkatcher | Add Fractions with Unlike Denominators

The rascally gang of meerkats have escaped from their pens. Add fractions to fix the ladders and catch those 'kats! In this activity, students will focus on adding fractions, starting with single-digit denominators and working up. This activity will include explanations of how the formula works.

• ## Meerkatcher | Divide Fractions with Unlike Denominators

The rascally meerkat gang is making a mess of the zoo. Divide fractions to dig the dirt and catch those 'kats! In this activity, students will focus on dividing fractions, starting with single-digit denominators and working up. This activity will include explanations of how the formula works.

• ## Meerkatcher | Subtract Fractions with Unlike Denominators

The rascally meerkat gang has ruined the zoo's fences. Subtract fractions to fix the fences and catch those 'kats! In this activity, students will focus on subtracting fractions, starting with single-digit denominators and working up. This activity will include explanations of how the formula works.

• ## Dunk Tank!: Area of Squares & Rectangles

An interactive game to explore key concepts about area of squares, rectangles and composite shapes -- including measuring with unit squares and using the formula A = L x W. Students play Polygon-athon to create simple polygons and find their areas; watch a comic video about using a non-standard unit of measure; and answer other questions designed to promote deeper understanding of area. This resource is part of Dunk Tank!, a collection of interactive math-themed games.

• ## Dunk Tank!: Circles

In this interactive game, learners explore how to calculate diameter, radius and circumference. It also introduces the concept of pi and its relationship to circle area and circumference. Activity segments include the mini-game Find Tuffy, a comic video about "pi" and "pie", and quiz-show questions to help students self-gauge understanding of each concept.

• ## Dunk Tank!: Fractions, Decimals & Percents

In this interactive game, learners explore relationships among fractions, decimals and percents. Activity segments include Stop the Pop -- a mini-game that challenges students to quickly find equivalent sets of fractions, decimals and percents; a comic video about how "50% off" can still lead to major spending; and game show questions designed to help them further their facility with convertions. This resource is part of Dunk Tank!, a collection of interactive math-themed games.

• ## Dunk Tank!: Liquid Volume

In this interactive game, learners explore key concepts about liquid volume, including standard units of liquid measure and how to convert between them.  Activity segments include Fill It Up -- a game that challenges students to apply conversion of liquid units; a comic video about the importance of measuring carefully with when baking; and answering volume questions in a quiz-show format. This resource is part of Dunk Tank!, a collection of interactive math-themed games.

• ## Dunk Tank!: Mean, Median, Mode & Range

In this interactive game, learners explore mean, median, mode, range, and how to recognize which central tendency best represents a set of data.  Send in the Trolls promotes understanding of median; Bianca's Shoes takes a comic look at the problem of using mode to analyze shoe sizes; and game questions gauge comprehension of all four types of statistical distribution. This resource is part of Dunk Tank! a math-themed collection that features a combination of video and interactive gaming.

• ## Dunk Tank!: Ratio & Proportion

In this interactive game, learners explore how to use ratio and proportion to solve problems. Activities include Sleuths on the Loose -- a mini-game that challenges students to apply what they know about ratio and proportion; a comedy act that uses proportional relationships between parts of the body; and game questions designed to promote proportional reasoning. This resource is part of Dunk Tank!, a math-themed collection that features a combination of video and interactive gaming.

• ## Dunk Tank!: Venn Diagram

In this interactive game, learners explore Venn Diagrams and how they are used to represent data overlap and difference. Comical and real-world examples are provided using two and three circles, plus circle-within-a-circle representation. Activity segments incluce Zoo Mix-Up -- a game that features Venn Diagrams to sort animals in a wacky zoo; a video demonstrating the use of a Venn Diagram to make a pizza; and game-show questions designed to promote understanding of set intersection and union. This resource is part of Dunk Tank!, a math-themed collection that features a combination of video and interactive gaming.

• ## Dog Smarts

In this dog-themed math interactive, students learn how to determine the mean, median, mode, and range for a given set of data. Videos featuring real kids help contextualize the math.

• ## Fling It!

Take the trebuchet challenge: use data to make predictions and discover how much weight is needed to throw things and hit targets. Students learn how to make predictions from data, collect and place it in a line graph, and then predict what will happen if the pattern is extended. Videos featuring real kids help contextualize the math.
• ## Frequency Flyers

In this ski jump math interactive, students learn how to build frequency tables with and without intervals, and record data in them. Videos featuring real kids help contextualize the math.

• ## Garbology

In this sorting math interactive, students learn how to construct Venn Diagrams to sort data into sets. Videos featuring real kids help contextualize the math.