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In this activity, learners use edible models of the DNA molecule to transcribe an mRNA sequence, and then translate it into a protein.

These two activities (4th on the page) demonstrate the importance of two eyes in judging depth.

This fun hands-on astronomy activity uses a variety of simple props to help learners understand why they see what they see in a telescope.

In this activity, learners construct a 3-D paper model depicting how histone, acetyl and methyl molecules control access to DNA and affect gene DNA expression.

In this creative roleplay activity, learners will explore the various processes of the carbon cycle using movement and props to aid in comprehension.

In this activity (17th on the page), learners investigate why you cannot see colors in dim light.

In this demonstration (18th on the page), learners conduct a simple test to explore how the cornea refracts light, which is further bent by the eye lens through a process known as accommodation.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

In this quick activity/demonstration (5th on the page), learners explore depth perception.

In this activity, learners build edible models of DNA, while learning basic DNA structure and the rules of base pairing.

This guided inquiry three-part activity engages learners in thinking about the mechanism of natural selection through data collection and pattern recognition.

In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

Working in small groups, learners receive a written scenario regarding a bacterium with a certain goal it must carry out.

In this activity, learners discover why only some types of plastic can be recycled.

In this online activity, learners discover how random variation influences biological evolution.

Get all wrapped up in a lesson about skin!

Learners take a field trip along a local body of water and conduct a visual survey to discover information about local land use and water quality.

In this optics activity, learners explore interference by adding wax blocks to a ripple tank.

In this activity, learners create a model using metric measuring tapes and atmosphere composition data.

In this activity, learners will investigate the impacts of harmful phytoplankton using NOAA's Coastal Services Center Harmful Algal Bloom Forecasting (HABF) Project data.