"Avantor"

Hardened natural cement of calcium carbonate that binds other material such as gravel, sand, clay, and silt.

Erpobdella obscura

Poecilia reticulata.

Specimens to supplement the most widely-used college lab manual for physical geology.

Specimens to supplement the most widely-used college lab manual for physical geology.

Make teaching diffusion easy. Exclusively from Ward's Science, we've pre-mixed, pre-poured, pre-measured and pre-cut these agar cubes to save you time and eliminate messy preparation in your lab. Just open the jar and begin using. Prepared to align with Ward's AP Biology Investigation 4: Diffusion and Osmosis, these cubes are also ideal for use on their own, or in any lab activity demonstrating the topic of diffusion. Agar cubes are prepared in three sizes (approximately 1cm, 2cm, and 3 cm). Phenolphthalein has been added to the cubes to exhibit a vivid fuchsia color during production and stored in a solution of sodium hydroxide. Just add an acid such as vinegar to demonstrate diffusion.

Bundle and save.

Bundle and save.

Bundle and save.

Bundle and save.

Useful in lecture and distance learning.

Models and a kit.

Bundle and save.

This investigation meets AP Science Practices 1, 3, 4, 5, 6, and 7.

The nation's most exciting science competition now has kits for at-home use!

Detailed instructions and clearly labeled diagrams make this an excellent reference for you and your students.