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In this online activity, learners will explore size estimation in one, two and three dimensions. Multiple levels of difficulty allow for progressive skill improvement.

Jugando a este juego de estrategia, los chicos desarrollan su entendimiento de área y perímetro. En su turno, cada jugador hace una línea entre dos punto contiguos en la cuadrícula.

In this activity, learners play a card game that explores different size scales--macro, micro and nano.

This activity lets learners participate in the process of reconstructing a phylogenetic tree and introduces them to several core bioinformatics concepts, particularly in relation to evolution.

In this online puzzle game, learners need to choose a path from a starting number to a goal number. Along the path are simple operations (e.g.

Can you read the sentence "I C U"? Not really - but if you say each letter aloud, you'll say the simple sentence, "I see you." What if you change the "C" into a picture of an eye?

In this activity, learners discover which plants and animals have symbiotic relationships and how this impacts each organism.

In this activity, learners will exercise their imaginations and artistic skills. Appropriate for all ages, learners will create unique pieces to jumpstart storytelling sessions.

In this activity, learners use simple, everyday materials to experiment with balls and ramps.

In this three-part activity, learners play a game and conduct two simple experiments to explore water and surface tension. Learners will have fun discovering how water "sticks" together.

This PDF contains 12 calendars (12 months). Each month contains activities about math. Things to do on familiar holidays (like July 4), less common holidays (like Backward Day), and any day.

This strategy game has simple rules but can be a challenge. Players start with an empty hexagonal grid. On each turn, a player initials one empty hexagon on the grid.

As learners play this game, they develop logic, geometry, and spatial visualization skills. Players start out with an empty hexagonal grid.

In this outdoor activity, learners play a game of Tag to discover how neurons attach themselves to each other to form a chain.

In this math game, learners toss plastic cups to land just right and collect points to win.

In this online Flash game, learners test their engineering know-how, moving a collection of mechanical parts onto a board to make complete a system of parts that will move a ball from start to finish.

In this Cyberchase activity, learners play a game where zero can help them win--or make them lose! Learners roll the die and place a zero in the tens or ones place.

Jugando a este juego, los chicos desarrollan habilidades en área, perímetro, múltiples, y factores. Tomen turnos para hacer rectángulos con 12 cuadrados en la cuadrícula.

In this simulation game, learners play as predators equipped with genetically different “mouths” (utensils) and hunt for “prey” (assorted beans).

In this interactive game, learners listen to the songs of four different thrushes and then try to match each bird with its song.