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Learners assemble a figure from a nylon stocking or sock stuffed with soil and seeds. The ends of the nylons inside the jar absorb water, which feeds the grass seeds.

Learners construct a bracelet containing two strands of beads, which represents a double strand of DNA that codes for a gene. They match beads to the bases in a section of a chimp's DNA code.

In this activity, learners create a map showing the origins of spices and herbs from a favorite recipe(s). Learners first research the origins of the ingredients and then locate them on a world map.

In this activity, learners try to revive wilted celery. Learners discover that plants wilt when their cells lose water through evaporation. Use this activity to introduce capillary action.

In this activity, learners investigate soil erosion. Learners set up a simulation to observe how water can change the land and move nutrients from one place to another.

In this activity (p.25 of PDF), learners investigate spores. Mushrooms produce millions of spores which are equivalent to the seeds of plants but without the massive food reserves.

In this biology/ecology activity, learners construct a terrarium out of a tennis ball container. This terrarium is unique because it never has to be watered.

In this activity (located at the bottom of the page), learners investigate soil and explore the creatures that live in it.

Learners use M&Ms® (or any other multi-color, equally-sized small candy or pieces) to create a pie graph that expresses the composition of air.

This activity shows you how to make a mold terrarium using a jar and leftover food.

In this activity, learners conduct an experiment to explore how water flows up from a tree's roots to its leafy crown.

In this online simulation, learners can see adaptation and camouflage in action.

In this activity, learners stain fabrics--on purpose!

Ivy Rutzky, a scientific assistant at the American Museum of Natural History, introduces an activity where learners create a scientific illustration of a monarch butterfly.

In this online game, learners test their skills of categorization.

In this activity (located at the top of the page), learners make an easy river strainer and see what they can catch.

The Chinese invented paper made from plants and cloth about 2,000 years ago. Learners follow a similar process to make paper from recycled paper.

In this family or group inquiry activity, learners use their senses to explore a local forest or woodland.

In this activity (p.7-8 of PDF), learners examine fossil formation.

Learners make their own acid-base indicator from red cabbage. They use this indicator to test substances around the house.