Written by Amrina Visram
The following two lessons are developed around the culminating mini marsh assignment that covers grade 3 specifics of the Science strand, Understanding Life Systems, Growth, and Changes in Plants. The first lesson is an introductory assignment where students independently create a plant from plasticine. This lesson touches on three curriculums: Science, The Arts, and Language. Students will learn to properly label and identify the function of the plant parts. The assessment tool used for the first lesson will be a checklist to coincide with the worksheet expectations. The second lesson plan is the summative assignment where students work in groups of three to make final observations, measurements, conclusions, while identifying similarities and differences of the growth and development stages of the mini marsh plants. Students will be able to express the impact humans have on plant growth and present this knowledge to the class using a digital tool. This lesson meets curriculum expectations from Science, Language, and Math. Two assessment tools are used, a checklist for self-assessment and a rubric for summative assessment.
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You could call digestion a disassembly line. Your body takes whatever morsel of food you give it, breaks it down, wrings out all the nutrients it can, and discards the waste. It’s an amazing example of chemistry in action, and it happens 24/7. Our body relies on three major types of food: carbohydrates, fats and proteins. In this latest episode of ChemMatters, find out how the body breaks down these big three food groups and puts their nutrients to use.
Humans spread like weeds in South America; polar bear problem growing; some spiders like veggies; the mysteries of Zika; soils could help eliminate greenhouse gases; world’s fastest electron diffraction photos; black holes everywhere – just a few of the themes in today’s eclectic collection of SciNews. Share these stories with your students and get them excited about science.
Heinrich Jaeger, William J. Friedman and Alicia Townsend Professor in Physics, and Scott Waitukaitis, a graduate student in the Physics department, have published a report in the July 12 issue of Nature on the process of impact-activated solidification that occurs when compressive forces are applied to fluid-grain suspensions. The two researchers conduct experiments with a mixture of cornstarch and water that is classified as a non-Newtonian liquid. Their work examines the strange behavior of the cornstarch-water liquid, which instantly changes into a solid within the area of impact. The behavior of non-Newtonian liquids has puzzled scientists for decades, and Waitukaitis and Jaeger’s report sheds new light on this longstanding problem in suspension science.