Curated OER
Planetary Alignments
In this planetary alignments activity, students use 2 different methods to find out when planet alignments will occur. They use a three number series and they use least common multiples to find out when Mercury and Venus will align.
Curated OER
A Matter of Timing
In this orbital period worksheet, students solve 2 problems about satellites and their orbits. They determine how many days it takes for two satellites to be in "opposition", they find the least common factor between their orbit periods...
Howard Hughes Medical Institute
What van Leeuwenhoek Saw
When van Leeuwenhoek saw cells and single-celled organisms for the first time, he knew these small things were a big deal! Share his discoveries with young learners through a narrated video, model-building activity, and scale study....
Alabama Learning Exchange
Diverse Life Forms of the Ocean
Students recognize marine organisms and differentiate between plankton and nekton. In this investigative instructional activity students create a concept map using their list of terms and study marine life forms.