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Small Snails, Enormous Elephants
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This activity (located on page 2 of PDF) introduces learners to the real size of animals using nonstandard measurement.

Life Size: Line 'em up!
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In this activity on page 1 of the PDF, learners compare the relative sizes of biological objects (like DNA and bacteria) that can't be seen by the naked eye.

Heavy or Light
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In this activity, learners explore a scale by comparing objects, which look similar but have different weights. Learners predict and then measure the weights of various objects using a scale.

Make a Human Scale Ladder
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In this quick activity about size and scale (on page 2 of the PDF under What's Nano?

Coffee to Carbon
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In this activity, learners place cards featuring biological structures in order by their relative size from largest to smallest.

Size Wheel
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In this fun sticker activity, learners will create a size wheel with images of objects of different size, from macroscopic scale (like an ant) to nanoscale (like DNA).

Exploring Size: StretchAbility
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In this game, learners explore the different sizes of things in the world. In this Twister-like game, learners must place a hand or foot on a circle of the right scale - macro, micro, or nano.

Horton Senses Something Small
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In this story time program, young learners listen to the Dr.