Lesson 7 — Fair Test: Which Material is Most Absorbent? 1 / 5

Today we are real scientists running a fair test! We will find out which material soaks up the most water. 💧

Step 1: A material that soaks up water is absorbent. One that keeps water out is waterproof.

💧🧽 Absorbent: paper towel, sponge, cotton

🚫💧 Waterproof: plastic wrap, foil, raincoat

Step 2: To be fair, we change only ONE thing and keep everything else the same.

CHANGEthe material MEASUREwater absorbed KEEP SAMEwater, time,method

Step 3: Real scientists record their results in a table and draw a column graph to see the pattern.

sponge paper plastic

Your turn, scientists! 🔬

  1. Write your question and prediction.
  2. Plan your fair test (change / measure / keep the same).
  3. Test the materials, record your results and draw your column graph.
  4. Use the Absorbency Investigation worksheet and the Fair Test Template.