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How tall is the tallest waterfall? How small is the smallest animal? In this adventure, we’re exploring extremes, from the fastest cars to the looongest train ride.

For Grown-Ups

What You’ll Need

Your CKJR Toolkit. What’s in the Toolkit?
  • Blocks (plastic, wooden, cardboard, magnetic—anything to build with!)
  • Play Doh (store bought or homemade)
  • A bin for water, plus cups, scoops, and spoons
  • Figurines (small animals, dinosaurs, or people)
  • A big roll or pad of paper
  • Washable paints, crayons, markers, and any other easy-to-clean art supplies


  • A piece of cardboard
  • Books or boxes for stacking
  • Toy cars, marbles, or other objects that roll
  • A tape measure or ruler
  • Small objects like dried beans, lentils, rice, and Cheerios (or other cereal)
  • Glue (optional)
  • Plastic cups (optional)

Family Activity

Make a family adventure out of extremes: Visit the biggest park in your neighborhood, take the longest bike ride, climb to the top of the tallest building, eat the biggest ice cream cone—whatever you can dream up together!