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In this multi-part activity learners examine non-point water pollution.

Players take turns adding shapes made of three squares to a grid. They try to fit their shapes on the grid in a way that blocks the other player.

In this activity, learners will use Google Sky to observe features of the night sky and share their observations.

As learners play this strategy game, they develop understanding of squares, area, and perimeter. On each turn, a player draws a line between two dots next to each other on the grid.

In this activity, learners use number sense and mental math strategies to estimate the price of a sign.

In this design challenge, learners will practice empathy and design thinking skills by creating an invention of the future.

In this activity, learners will build the highest tower they can out of recycled materials.

As learners play this game, they build skills in area, perimeter, multiples and factors. They take turns making rectangles with 12 squares on the grid.

Los jugadores toman turnos para añadir figuras de tres cuadrados a la cuadrícula. Intenten encajar sus figuras en la cuadrícula de modo que bloquee al otro jugador.

In this activity, learners will plan a snack within a budget. With a $20 limit (theoretical) to spend on snack for everyone, learners look over grocery store circulars and make their shopping lists.

In this activity, learners will decide together on a question about how far, long or high the group could reach together.

Use this Moon Map Guide to help learners identify features on the Moon, while looking through a telescope.

In this math activity, challenge learners to make two equal rows from eight different paper strips. Learners can explore the many ways they can solve this problem.

In this physics activity, challenge learners to remove the bottom coin of a stack of nickels without knocking over the stack. Use this activity to demonstrate friction.

In this activity, learners will put a set of containers in order by capacity. Would the tallest container hold more or less water than the wide, short one?

In this activity, learners listen to songs and decode hidden messages based on the same principle as a modem. As a final challenge, learners decode the binary messages in a music video.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this activity, learners play a game from India similar to Tic-Tac-Toe. Players take turns placing coins on the game board and sliding the coins along the spaces.

This is a deceptively simple game to teach strategy, planning, and pattern analysis. In this game, learners take turns removing tokens from a board, and develop a plan to take the last piece.

In this activity, learners will engineer a roof using simple materials to protect a construction paper person from a rainstorm.