Do you think it is important to test how strong that cement is for the new bridge? Absolutely!! Material development and testing ensures that your materials are just right – strong enough, light enough, tough enough.
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Develop and test your own mud bricks! How strong can you make them?
Time: 1 hr activity, 1-2 days drying time
What you need
Materials
□ Dirt (about 15 cups or 3.5 L)
□ Water
□ Sticks
□ Leaves
□ Dead grass
Tools
□ Bucket with handle
□ 2 Smaller buckets or bowls
□ Stick for stirring
□ (2) 2×4 or 1×2 boards 16 – 24 in (40.5 – 56 cm) long
□ 6 cinder blocks
OR
2 tables, 2 chairs
OR
2 of anything equal in height, about 22 – 32in (56 – 81 cm) tall
□ Ruler or yardstick
Before you start
This is all about the scientific method! Do you remember the steps?
Observe – Hypothesize – Experiment – Analyze – Report
As you experiment with your bricks, adding extras to the mud to see what makes them stronger, you are performing steps of this method.
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