Use this handy and versatile water quality testing device to monitor pH levels, temperature in Celsius or Farenheit, or electrical conductivity, which allows you to gauge the adjustment of nutrients, salts, and other elements for healthy plant growth. Excellent for hydroponic gardening or experiments in the classroom. LCD screen gives precise measurements to the hundreth decimal point.
Build over 100 exciting electronic projects with this easy to use kit!
Buy Newton's Cradle or balance balls here! This classic science desk toy that will keep you amused and teach you physics.
This smaller transportable Van de Graaff Generator will easily fit in any classroom!
The large realistic model has removable organs that can be studied and set back into the correct position.
Easily assemble a working alarm motion detector!
A beautiful desk or bookshelf accessory for the reading fanatic in your family!