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Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.

This modeling activity allows learners to discover for themselves what Mendel uncovered in his famous pea experiments.

This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell.

In this math lesson, learners analyze the density of liquids in order to explore linear functions.

In this laboratory activity, learners use a simple procedure to bait oomycetes from water and/ or soil and then examine these fungus-like organisms with the microscope to see how they look.

In this activity, learners use simple items to construct a device for indicating air pressure changes.

In this activity, learners explore clouds and how they form.

In this activity related to climate change, learners create and explore topographical maps as a means of studying sea level rise.

In this forensics activity, learners solve a mystery using “DNA” taken from the scene of the crime.

In this activity (page 59 of the PDF), learners spin and observe false eyelashes in jars of water (prepared at least 1 day ahead of time) to investigate the effects of different types of motion on the

In this genetics activity, learners discover how to extract DNA from green split peas.

In this activity, learners will examine a variety of seeds, describe them, and determine how they are dispersed.

In this activity, learners will observe a deceptively simple process: a burning candle.

In this activity, learners will perform various investigations to understand the vestibular-ocular reflex and learn about the importance of visual cues in maintaining balance.

In this lab (Activity #1 on page), learners explore how we see color.

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.

In this activity, learners carry out a scientific investigation of dust in their classroom. Learners produce an analysis on graph paper of the dust they collect over the course of a few days.

In this activity, learners play a series of simple games to investigate navigation without visual and sound cues.

In this activity, learners test the Law of Reflection based on experimental evidence. Learners produce raw data and explanations based on their data: pencil tracings of incident and reflection rays.

In this experiment, learners will explore whether increased carbon dioxide makes our oceans more basic or more acidic.