Curated OER
A Spool Of Thread
Students describe a spool of light colored thread that the teacher holds in his/her hands. They are asked what substances (cotton and wood) are present and what structures (thread and spool) are present. The teacher conclude that the...
Curated OER
Heredity (Mendelian Genetics)
Students observe and record observations of whether a person is a taster or nontaster. They test selected individuals from their families and peer groups and chart all findings to determine which trait (e.g. taster or non-taster) is...