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In this math lesson, learners count and compare amounts of money less than or equal to one dollar.

This activity explores the main algorithms that are used as the basis for searching on computers, using different variations on the game of battleships.

In this activity, learners create a mind and math puzzle that requires a three-dimensional solution.

This activity introduces the idea that computer scientists measure information by how "surprising" a message is.

In this sorting activity, learners play a game in which they try to identify the largest number of differences between two objects.

In this math activity, learners play a game similar to 20 Questions, in which learners must identify a secret number drawn from a bag.

In this seismic simulation, learners play a "who-dunnit" game to explore earthquakes.

En esta tira cómica, Cientina le enseña a Mateo un truco de lógica nuevo con seis tarjetas.

In this math puzzle game, learners work together to use algebraic reasoning and fun clues for solving word puzzles.

The popular sudoku puzzles use numbers, but the game could played with any set of 9 different objects!

This is a web activity about simple machines. Learners will explore a lawn mower and identify six different simple machines which work together to help make our lives easier.

In this activity, learners will keep track of how much they can do in one minute. Instructors can pick something everyone will do for a minute, such as jumping up and down or drawing stars.

Using paper, paper clips, an index card, and tape, teams of learners design flying devices to (1) stay in the air as long as possible and (2) land as close as possible to a given target.

Learners use their opponent's clues and a compass rose to find the hidden treasure on a map. Learners use problem solving and coordinate grid skills as they hunt for treasure.

This math challenge, played with two players or a whole group, engages your problem solving skills.

This is a game that is sure to sharpen players' basic math skills. Players must use four randomly selected numbers to create an equation that equals a fifth number.

In this activity, learners follow clues to find five puzzle pieces, then assemble them. This activity works well with a whole group, individuals, or families.

This activity puts a mathematical twist on the familiar “guessing jar.” No guesses allowed, estimates only.

In this math puzzle, one player hides a rainbow of four colors while another player tries to guess the hidden rainbow colors in the correct order.

In this activity (on pages 49-54 of PDF), learners play with tangrams, a set of triangles, squares and a parallelogram that can combine into a larger square as well as all sorts of other shapes.