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American Chemical Society

The Fate of Calcium Carbonate

For Students K - 5th
Soften up an egg. Learners use vinegar to test for calcium carbonate in an egg shell and an antacid tablet and compare the reaction with vinegar to the reaction with water. In a second experiment, class members break down an egg shell...
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Discovery Education

By All Indications

For Teachers 6th - 8th Standards
How do people determine if something is acidic or basic? Learners make their own acid-base indicators using red cabbage and then determine the acidity and alkalinity of different substances. First, they test substances of known pH and...
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Activity
Curated OER

4th Grade Food Safety Lesson

For Teachers 3rd - 5th Standards
From a high-speed hand-washing lesson to identifying important nutrients in fruits and veggies, this resource has several activity ideas and worksheets for teaching food safety to your learners.