US$ 524.50
preserving field strength between magnetism and field-line activities
this five-piece weight set bundles machined steel shafts from 50 to 1000 grams on a wooden storage block
and similar simple molecules to teach VSEPR theory and 3D molecular geometry
a compound unit for demonstrating multi-rope mechanical advantage in physics activities
Plankton Collection Net with Vial Type_Cross-Sectional preserving field strength between magnetismCollection net for aquatic plankton sampling, featuring fine mesh muslin netting, a swivel attachment, and collection vials for gathering microscopic organisms in the field.
US$ 524.50
US$ 664.50