"WardsSci000478"

Ideal for sampling ponds and lakes.

Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.

Clear rhombs showing double refraction.

Designed for Introductory College Petrography Labs.

Gray-to-brown basaltic, with over 50% vesicles.

Learn while you play with this interactive review game. Students play Bingo using 75 review cards covering the curriculum standards on rocks.

Hematite-cemented quartz; orthoquartzite.

Choose one, or all of our specific structures models to introduce concepts of unit cells, coordination numbers and crystal systems; or as valuable aids when discussing solid state, X-ray diffraction, cohesive forces and other topics. (The characteristic unit cell can be indicated by colored thread or colored connecting rods).

Interactive, hands-on, and digital resources about owls, owl pellet dissection, and prey identification.

The most complete series of human ancestry

These delightful young reader books use splendid cut-outs, eye pleasing illustrations and even an amusing song or two to guide students through the changing seasons, to teach them that weather can be observed and that weather can vary from day to day and from season to season, and that weather can affect what we do and what we wear.

Students identify and quantify microbes in air, soil, water, or any surface.

Customize your own insect net, or replace existing parts.

This unique kit includes a stream table and a starter pack of sediments, with refill options available.

Scan an entire landscape with oversize prisms that offer an extra-wide, 487' field of view at 1000 yards.

Pure, bright yellow, Frasch sulfur.