Curated OER
To The Clock of Eras
Third graders investigate the events of geological time using a chart called a "Clock of Eras". In this geological events lesson plan, 3rd graders compare a standard clock to a geological clock. In addition, students consider periods...
Curated OER
Basic Voltmeter Use
In this voltmeter worksheet, learners answer 12 questions about voltmeters connected to batteries, ohmmeters and circuits. They determine how much voltage would register on a voltmeter given diagrams of circuits.