US$ 144.99
this book unveils the extraordinary behaviors
is the largest living species in the deer family
making this collection valuable for educational institutions
and semi-deserts
the flapjack trades speed for squish—because in the deep sea
Mini Matter Stress Science Kit Real Human Left Tibia - Pathology this book unveils the extraordinaryThe Stress box explores the forces that push, pull, and overwhelm. Each object reveals how materials and organisms respond when physical tension buildsand what happens when its finally released. The Stress box contains these items and an info card: Giant Rubber Band: Stretching this loop applies tensile stressa pulling force that stores energy in its elastic structure. When released, that stress is rapidly converted into motion, making the rubber band
US$ 144.99
US$ 247.50
US$ 169.00