"serv Dial Sud & sars"

The wings of the dead leaf butterfly (Kallima inachus) are an example of mimicry in the natural world.

Conifers come in all shapes and sizes — and so do their cones.
Includes: 6 pine cones, 6 spruce cones and 6 cedar cones.
*Pine cone factoid: Pine cones can forecast the weather! In dry weather, the scales dry up and open out. If they start to close up, wet weather is coming!

Ideal for Scraping and Mixing.

Students of all ages love dice games and you'll love the simplicity with which you can review number facts, teach random numbers, explore probability and much more. These traditional-sized dice come in all white or multi-colored.

See the spectrum of various light sources with this economical device

Includes: six each of conglomerate, sandstone and shale. Set of 18.

Common rocks and minerals for testing and identification studies are 2–3cm each.

Includes: six each of marble, slate, and quartzite. Set of 18.

Common rocks and minerals for testing and identification studies are 2–3cm each.

Includes: six each of obsidian, pumice, and basalt. Set of 18.

Common rocks and minerals for testing and identification studies are 2–3cm each.

Meets AP Science Practices 4, 5, 6, and 7, and Big Idea 4.

Pipe Cleaners

CLOTH SILK WHITE 11 X 9

General-purpose media support the growth of a variety of bacteria and fungi.

For Culture of Freshwater Algae. Comes in ready-to-use and concentrated formulations

Excellent for cleaning semimicro tubes and other small apparatus. Has black nylon bristles with fan style tip mounted in twisted galvanized wire. Brush area is 1.5 cm in diameter by 7 cm in length; overall length is 15 cm. Package of 12.

Recommended for Polystyrene Storage Jars.

General-purpose media. Supports the growth of a variety of microorganisms.