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Planets Order, Characteristics, and Orbits Linda Hallinan We- Excel 2007/08 Earth, Moon, and Sun Systems Intended Setting • Suburban Junior High School • Campus Style • Approximately 300 students (7th-8th) • Long-term sub position Astronomy started when the classroom teacher returned. Could not execute lesson, started my next position in the high school math department immediately after. State Standards • 6-8 Earth and Space Science/Benchmark 1 Describe how objects in A the solar system are in . regular and predictable motions that explain such phenomena as days, years, seasons, eclipses, tides and moon cycles. 6-8 Earth Space force is the dominant 2 • Explain that and gravitational . force determining motions Science/Benchmark A in the Solar System and in particular keeps the planets in orbit around the Sun. Flow of the lesson (2 -3 class periods) • Construction of an ellipse - Foci - “The Sun is one.” • Planetary Clue Cards - understand characteristics of the planets and order. • Set up a model of planetary distances using toilet paper as a measurement tool. • Homework: If the sun were a golf ball understanding diameters of the planets. Assessments • Formative Assessments – Pre-Test – Planetary Orbits - 1st attempt – Group Questioning • Summative Assessments – Planetary Orbits - 2nd attempt – Post-Test Rubric for Planetary Orbits 3 Planet Order and Labels Orbit Paths Neatness 2 Most (7) planets are represented in the correct location with the correct characteristics. Most (7) paths All paths are are close to close to circular circular in in nature and nature and not not equidistant equidistant from each from each other. other. All planets are represented in the correct location with the correct characteristics. All information is legible. No stray marks. Most information is legible. No stray marks. 1 Few (4 or less) planets are represented in the correct location with the correct characteristics. Few (4 or less) paths are close to circular in nature and not equidistant from each other. Little information is legible. Stray marks not interfering with picture clarity. 0 No planets are represented in the correct location with the correct characteristics. No paths are close to circular in nature and are equidistant from each other. Information illegible. Stray marks interfering with picture clarity. Suggested Inclusion Strategies • More guidance with the toilet paper measurement activity. • I would have a matching of the distance number for the homework page instead of the math component. Suggested Extensions • Night Sky Projection Activity Have the students poke holes in a piece of black construction paper and then have them project a light through the paper and hang Styrofoam balls from the ceiling at the locations that the light hits them.