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Lean, Mean Information Machine: Using a Simple Model to Learn about Chromosomal DNA
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Learners observe a model of a cell and its chromosomal DNA made from a plastic egg and dental floss. Use this model to illustrate how much DNA is held in one cell.
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Measuring Your Breathing Frequency at Rest
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In this activity about the brain and sleep (on page 138 of the PDF), learners measure their resting breathing rates. Learners will discover that breathing frequencies vary amongst individuals.
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Look-alike Liquids
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Learners add drops of four liquids (water, alcohol, salt water, and detergent solution) to different surfaces and observe the liquids' behavior.
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Changing the Density of a Liquid: Adding Salt
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Learners see that a carrot slice sinks in fresh water and floats in saltwater.
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Colors Collide or Combine
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Learners place multiple M&M's in a plate of water to watch what happens as the candies dissolve.
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Salt 'n Lighter
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In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater.
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Exploring Baking Powder
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In this activity, learners examine baking powder, a combination of three powders: baking soda, cream of tartar, and cornstarch.
Investigating Density Currents
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In this lab activity, learners explore how to initiate a density current. Learners measure six flasks with different concentrations of salt and water (colored blue).
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It's a Gas!
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In this simple activity, learners see the production of a gas, which visibly fills up a balloon placed over the neck of a bottle.
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Divers
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Learners experiment with a 2-liter plastic bottle containing water and four “divers." The divers consist of open, transparent containers with the opening points downward.
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Why Circulate?
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In this activity related to the human circulatory system (on page 10 of the PDF), learners observe the dispersion of a drop of food coloring in water, draw conclusions about the movement of dissolved
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Drugs, Risks and the Nervous System
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In this activity, learners estimate risks associated with different events and compare their estimates to the real possibilities.
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Carbon Sequestration
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In this inquiry-based lesson, learners measure the biomass of trees, calculate the carbon stored by the trees, and use this information to create recommendations about using trees for carbon sequestra
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Why Doesn’t the Ocean Freeze?
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In this activity, learners explore how salt water freezes in comparison to fresh water.
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Do the Mystery Samples Contain Life?
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In this activity (on pages 13-16 of the PDF) learners investigate three mystery samples to see which one contains life. The three samples are sand, sand and yeast, and sand and antacid.
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Jem's Pykrete Challenge
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In this activity, learners make pykrete by freezing a mixture of water and a material like cotton wool, grass, hair, shredded paper, wood chips, or sawdust.
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Bouncy Egg
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In this activity, learners explore how acids can dissolve eggshells leaving behind a membrane-covered bouncy egg.
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DNA Detective
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This activity is about collecting and analyzing DNA as part of a criminal investigation.
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Percentage of Oxygen in the Air
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In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust.
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Physics in the Kitchen: Sink or Swim Soda
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In the kitchen, learners can perform their own density investigation.