Search Results


Showing results 21 to 37 of 37

Add to list Details
Learners add acid rain (nitric acid) to two cups that represent lakes. One cup contains limestone gravel and the other contains granite gravel.

1 cent - $1 per group Ages 14 - adult 5 to 10 minutes
Add to list Details
Learners compare the properties and solubilities of Styrofoam (TM), ecofoam packing peanuts, and popcorn. First, the solubility of each substance is tested in water.

1 cent - $1 per group Ages 11 - adult Under 5 minutes
Add to list Details
As a group, learners investigate three packages which are all the same size and shape, but have different contents. One is filled with foam, one is filled with wood, and one is filled with metal.

$1 - $5 per group Ages 4 - 11 10 to 30 minutes
Add to list Details
Learners use a candle to investigate the products of combustion. When a glass rod is held over a lit candle, the candle flame deposits carbon on the rod.

1 cent - $1 per group Ages 11 - adult 5 to 10 minutes
Add to list Details
Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.

$1 - $5 per group Ages 11 - adult 30 to 45 minutes
Add to list Details
This display shows slow chemical reactions in colorful crystal formations known as Liesegang Rings. These reactions are similar to those forming the rings in agates.

$5 - $10 per student Ages 14 - adult 1 to 4 weeks
Add to list Details
In this activity, learners perform a simulated blood test procedure.

$1 - $5 per group Ages 11 - adult 5 to 10 minutes
Add to list Details
This is written as a static display, but can easily become a hands-on experiment for learners.

$5 - $10 per group Ages 14 - adult 30 to 45 minutes
Add to list Details
In this activity, learners discover that atoms and ions of different metals will change places.

1 cent - $1 per group Ages 11 - adult Under 5 minutes
Add to list Details
In this activity, learners mix ingredients in a plastic bag, and then identify three characteristics of a chemical reaction: production of heat, color change, and production of a gas.

$5 - $10 per group Ages 11 - 18 10 to 30 minutes
Add to list Details
In this activity (on pages 25-31 of PDF), learners soak sponges with different amounts of plaster of paris to simulate different levels of calcification in bone formation.

$1 - $5 per student Ages 8 - 14 1 to 7 days
Add to list Details
This lesson (on pages 15-24 of PDF) explores how sound is caused by vibrating objects. It explains that we hear by feeling vibrations passing through the air.

$1 - $5 per group Ages 4 - 18 10 to 30 minutes
Add to list Details
Learners write their initials by applying different clear "magic ink" solutions to separate pieces of paper and then "develop" the inks with other clear solutions.

$1 - $5 per group Ages 14 - adult Under 5 minutes
Add to list Details
Learners use Benedict’s solution and heat to test for the presence of simple sugars in glucose, sucrose, starch, and starch combined with amylase.

$5 - $10 per group Ages 11 - adult 10 to 30 minutes
Add to list Details
In this activity, learners investigate vitamin C.

$5 - $10 per group Ages 8 - adult Under 5 minutes
Add to list Details
In this activity, learners electrically plate zinc onto brass objects.

1 cent - $1 per group Ages 11 - adult Under 5 minutes
Add to list Details
This display shows the dangers of acid rain on buildings and other structures as two concrete bunny rabbits are disintegrated by sulfuric acid. Learners scrape chalk onto the concrete bunnies.

$5 - $10 per student Ages 11 - adult 10 to 30 minutes