Class 1
Workbook (provided before the course)

Class 2
Workbook (provided before the course)
4 Small milk cartons
Scissors
Cardboard (a small box-worth would be plenty)
Ruler
Tape (i like using a heavy duty tape like duct tape)
Scrap piece of paper and pen or pencil
Rag or paper towels
Marbles (20 to 30)
Calculator
Bucket, tub, sink, or dishpan
Water

Class 3
Workbook (provided before the course)
Small glass bottle
Balloon that fits inside the bottle
Plastic tubing (at least 30 cm or 12 inches of aquarium plastic tubing)
Big tub or container, waterproof. It should have enough room so the glass bottle can float in it freely.
Strong and waterproof tape
Water
Towels
Two plastic bottles of the same size
Funnel
Dish soap
Vegetable oil

Class 4
Workbook (provided before the course)
Larger bucket/container
Smaller container
Blindfold
"fishing net" (provide an assortment, such as cups, mesh bags, sandwich bags or aquarium fishing nets)
An assortment of many marbles and other balls of different colors and sizes, placed in a bowl to prevent them from rolling around; cheaper materials can be used, such as rocks; while numbers/colors/types of balls (fish) are flexible, here is an example assortment: 5 large red rubber balls (like the type for playing jacks), 10 glass marbles of color A, 10 glass marbles of color B, 3 golf balls, 4 pairs of dice, 10 very small pebbles (much smaller than the marbles)
Water
Paper and pencils, for recording data