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Caution! Wildlife Crossing
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In this design challenge, learners use their creativity and imagination to design and test a wildlife crossing for their favorite animal.

Twisted Tesselations
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In this activity (on pages 41-47 of PDF), learners explore tesselating geometric patterns (repeated shapes, similar to the art of M.C. Escher).

Bird Feeder Challenge
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In this activity, learners are challenged to build a bird feeder using recycled materials from home and are encouraged to problem solve during the extensions.

Tall Tower Challenge
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In this activity, learners will use their chosen material to build the tallest tower possible in under three minutes. This activity uses problem solving and fine motor skills to challenge learners.

Biomimicry Mash-Up
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In this design challenge activity, learners explore the concept of biomimicry by using a natural organism's special features to design a new human object.

Mix It Up
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In this math lesson, learners are introduced to proportional reasoning through modeling, sharing, and questioning techniques.

Three Little Pigs Construction Company
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In this activity about problem-solving, learners build a house for the Three Little Pigs using twenty straws and two index cards.
Alien Encounter
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Use multiplication to help the aliens find out how much fuel they need to get their spacecrafts home.

Help Wanted
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In this interactive board game, learners "hire" different types of scientists to help canine character Ruff Ruffman solve unusual problems.

Roller Coasters
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In this design challenge, learners will create their own roller coaster using household objects for the track and a marble or small ball as their cart.

Memory Match
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In this classic memory game (on pages 37-45 of PDF), learners turn over tiles to reveal images on the back.

Lost Labels
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In this experiment, learners will conduct chemical and physical tests to identify mystery substances.

Roller Coasters
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In this activity learners will build roller coasters and test them using small balls or marbles.

Six Holes of Arachnipod Crossing
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In this Cyberchase activity, learners use the numbers one through six to solve a puzzle.

Acting Out
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This activity (on pages 21-32 of PDF) has learners act out several classic brain teasers.

Paper Puzzle
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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.

Make Your Own Mini Mini Golf Course
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Build your own Mini Mini Golf Course and learn about hands-on building and design, basic circuitry, motion modules and more!

Tricky Tangrams
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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.
What's in the Bag?
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In this activity, young learners use their sense of touch rather than sight to identify a mystery object in a bag. Learners take turns acting as "peekers" and "sensers" throughout the game.

Turning the Tables
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In this activity, learners explore geometry and spatial relationships as they figure out how to arrange tables for a party.