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Skin, Scales and Skulls
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In this activity, learners examine body parts (including skin, scales, and skulls) from fish, mammals and reptiles. Questions are provided to help encourage learner investigations.
Modeling Limits to Cell Size
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This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell.
Life Size: What's in a microbe?
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In this activity on page 3 of the PDF, learners visualize the relative size and structural differences between microbes that have the potential to cause disease.
Light on Other Planets
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In this math-based activity, learners model the intensity of light at various distances from a light source, and understand how astronomers measure the amount of sunlight that hits our planet and othe
Plankton Feeding
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This activity provides a hands-on experience with a scale model, a relatively high viscosity fluid, and feeding behaviors.
Earth Walk
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In this hands-on and feet-on excursion, learners take a science walk to visualize the planet's immense size and numerous structures, without the usual scale and ratio dimensions found in most textbook
Gummy Growth
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In this activity related to Archimedes' Principle, learners use water displacement to compare the volume of an expanded gummy bear with a gummy bear in its original condition.
Introduction to Ocean Zones
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In this activity, learners will create a diagram of the ocean zones and determine what organisms live in each zone.
Slimy Cells
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In this activity, learners solidify their conceptualization of cells by building a model of a cell in a ziplock bag.
Colors of Stars
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In this activity, learners observe colors in the flame of a burning candle to explore connections between matter, light, color and temperature -- basic concepts of matter and energy.
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.
The Thousand-Yard Model
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This is a classic exercise for visualizing the scale of the Solar System.
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.
Exploring Size: Scented Solutions
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This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing).
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.
Cutting it Down to Nano
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This simple activity uses paper and scissors to convey two key concepts to learners: the nanoscale is very small and working on the nanoscale requires special tools.
Spring Scale Engineering
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In this activity, learners explore how spring scales work and how they are used for non-exact weight measurement.
Scale Models
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In this activity, learners explore the relative sizes and distances of objects in the solar system.