Plants in a bottle kit, photosynthesis and respiration, Kit contains: Student instructions, CO2 Indicator, O2 and CO2 Concentration Color Charts, 4 simulated water samples, 6 labeled droppers, Photosynthesis and Respiration Diagram Sheet, O2 Indicator, O2 and CO2 Test Sheet
Fact/folds & Fault Model - 5 Parts, piece model is useful to illustrate important folds and faults found in Earth's crust, Students can understand fold planes, effect of tectonics stress and structural elements of a fault