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    Biotechnology and Biological Sciences Research Council
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    In this activity (p.8-9 of PDF), learners investigate the evolution of wheat by conducting sedimentation tests on different flours. The evolution of wheat from wild grasses demonstrates the...

    $5 - $10 per group Ages 8 - adult 10 to 30 minutes
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    New York Hall of Science
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    Does yeast breathe? Find out by watching how plastic bags filled with yeast, warm water and different amounts of sugar change over time. Demonstrate the interaction of microorganisms and the carbon...

    $1 - $5 per student Ages 6 - 14 45 to 60 minutes
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    Lawrence Hall of Science
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    Learners make a "menu" of any plants in their lunch for Monday through Friday and draw the plants from their lunch. Plants can include fruits, vegetables, grains in cereal or bread, and...

    free Ages 6 - 11 1 to 7 days
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    The Exploratorium
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    Learn about chemical reactions by making a Bubble Bomb, a plastic bag you can pop with the power of fizz. The bubbles in the Bubble Bomb are filled with carbon dioxide, a gas that forms when...

    1 cent - $1 per student Ages 4 - 11 10 to 30 minutes
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    Biotechnology and Biological Sciences Research Council
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    In this activity (p.6-7 of PDF), learners investigate the evolution of wheat by creating dough from different flours, observing the samples of dough as they rise, and then baking the dough. The...

    $10 - $20 per group Ages 8 - adult 1 to 2 hours
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    NCTM Illuminations
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    In this lesson, learners create memorable benchmarks for ounces and pounds by playing a scavenger hunt game in which they gain points for finding objects that weigh approximately an ounce or pound....

    $1 - $5 per group Ages 8 - 11 45 to 60 minutes
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    Lawrence Hall of Science
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    In this activity, learners search for various kinds of items made from minerals around their home or school, including toothpaste, wall paint, kitty litter, and bricks. The PDF contains a check off...

    free Ages 8 - 14 45 to 60 minutes
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    Biotechnology and Biological Sciences Research Council
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    In this activity (page 5), learners investigate the evolution of wheat by washing different types of dough with water and comparing the results. The evolution of wheat from wild grasses...

    $10 - $20 per group Ages 8 - adult 1 to 2 hours
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    Lawrence Hall of Science
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    Learners discover the bubble power of living cells in this multi-hour experiment with baker's yeast. Learners make a living yeast/water solution in a bottle, and add table sugar to feed the...

    $1 - $5 per group Ages 6 - 14 4 to 24 hours
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    NASA
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    In this activity learners observe mold growth on different types of bread by measuring and recording the growth rate. Educators can use this activity to introduce a challenge astronauts face while...

    $5 - $10 per group Ages 8 - 14 1 to 4 weeks

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