Skip to main content

Grow Dinosaurs

Activity Supplies

  • Cup of water
  • Wooden craft stick
  • Pencil
  • Paper
  • Ruler

Specialty Supplies

  • Grow dinosaur (expandable polymer water toy)

Activity Steps

  1. On Day 0: Place the dinosaur on paper, hold it down and trace around it closely with a pencil.
  2. Measure the length and height of your dinosaur tracing and record your results in the spot marked “Day 0”. Place the dinosaur in a cup of water and let it sit overnight. 
  3. Take your dinosaur out of the water, dry it and trace as before. Measure the length and height of your tracing and record your results for Day 1.
  4. Refill the cup with fresh water each day. 
  5. Repeat Step #3 and Step #4 for Day 2 and Day 3. 
  6. After three days, your dinosaur will be fully grown. Calculate the area of your dinosaur on each day by multiplying length by height. 
  7. Graph your results and track the rate of growth on graph paper with the area on the Y-scale and the day on the X-scale.

Official Lesson Plan