"STEM kits"

This kit is a unique teaching tool for introducing students to the chemistry behind plant pigments (the blueberry bio-pigment cyanidin) and how they can be used as pH indicators and fabric dyes.

Students use several techniques to investigate the location, methods, and mechanisms of transpiration in plants. Students first determine the source of water loss and confirm their findings with a qualitative chemical test. Then they prepare microscope slides of xylem in stem tissue, and prepare a leaf imprint using an innovative method that vividly highlights stomate structures. Finally, using WARD’S specially-designed potometer and supplied materials, students subject bean seedlings to varying environmental conditions to determine how transpiration is affected. You’ll get enough materials for eight setups, a teacher’s guide, and student copymaster.

Obsidian is hard black colored, volcanic glass.

Massive sedimentary gypsum with a moh's hardness 2..

Pegmatite is igneous rock similar to granite but with larger crystals.

Conglomerate is a sedimentary rock made up rounded quartz pebbles.

White to gray, medium to coarse-grained, crystalline.

Breccia is a sedimentary rock made up of angular rock fragments.

Understand how biotechnology works through modeling.

Gray to white metamorphosed carbonate rock.

Selenite is a Clear gypsum mineral with a moh's hardness of 2.

Pink Gneiss is foliated pink and black bands of biotite.

Fluorite is Green Halide mineral with moh's hardness 4.

Limestone is a gray calcium carbonate that will fizz with dilute HCl.

Carbonate rock formed by the precipitation from water.

Metamorphosed rock showing foliation and rich in hornblende.