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

1 cent - $1 per group Ages 8 - adult 30 to 45 minutes
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In this activity, learners cut a shape into two equal sized pieces and use their knowledge of geometry and space to prove that the two parts are equal.

1 cent - $1 per student Ages 4 - 8 10 to 30 minutes
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In this activity, learners will predict the size of a giant scale model of a comb or other rectangular object, then make one. If you tripled the size of a dollar bill, could you sit on it?

1 cent - $1 per group Ages 6 - 14 45 to 60 minutes
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In this activity, learners will measure the length of a shadow and use the distance from the equator to calculate the circumference of the earth.

1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
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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.

1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners combine counting, area and perimeter concepts as they prepare the seating arrangement for a family reunion dinner.

1 cent - $1 per group Ages 6 - 8 10 to 30 minutes
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In this two-part activity, learners map a navigation plan to get from Earth to Mars and back. In activity one, learners represent the orbital paths of Earth through dance and dramatic movement.

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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Learners make a counting/estimating jar to exchange with friends or bring home.

1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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In this math lesson, learners compare pattern blocks to visually understand halves, thirds, and sixths.

1 cent - $1 per group Ages 8 - 11 30 to 45 minutes
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Make snack time into measuring time and learn to read Nutrition Facts labels. Try this when you’re using “pourable” foods, such as cereal, yoghurt, or juice.

1 cent - $1 per group Ages 6 - 14 5 to 10 minutes
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In this robotics activity, learners drive a remote-controlled car through a course to learn the challenges faced while trying to operate a planetary rover.

1 cent - $1 per group Ages 8 - 18 1 to 2 hours
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In this puzzle, learners investigate the decisions involved in linking a network between houses in a muddy city.

1 cent - $1 per student Ages 8 - 18 30 to 45 minutes
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In this two-part math lesson, learners investigate problems that foster algebraic thinking across content strands. In the first part, learners explore even and odd numbers linked to quilts.

1 cent - $1 per group Ages 8 - 11 1 to 2 hours
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In this art/science/math activity, young learners are introduced to the concept of symmetry in nature.

1 cent - $1 per student Ages 4 - 8 10 to 30 minutes
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In this activity about sleep rhythms (on page 21 of the PDF), learners will collect data about their own sleep cycles and use a fraction wheel to examine their data.

1 cent - $1 per student Ages 8 - 14 1 to 7 days
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In this math activity, learners will create a scale diagram of their backyard or other outdoor area on graph paper.

1 cent - $1 per student Ages 8 - 11 30 to 45 minutes
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In this math activity, learners make and explore patterns using the letters in their names, a grid, and some colors.

1 cent - $1 per student Ages 4 - 8 5 to 10 minutes
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In this activity, learners will participate in a scavenger hunt involving sizes, shapes, and numbers. This activity works well with a whole group, individuals, or families.

1 cent - $1 per student Ages 6 - 14 10 to 30 minutes
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In this math activity related to volume, learners use problem solving skills to calculate and build a model house for Minus the dog.

1 cent - $1 per group Ages 8 - 11 10 to 30 minutes
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In this activity, learners find as many combinations of a hundred as they can using various puzzle pieces from a hundred square grid paper.

1 cent - $1 per student Ages 6 - 11 5 to 10 minutes