1. OBJ: Given activity sheet, notes, model and image SWBAT explain how we see using our eyes and how to correct for nearsightedness and farsightedness with 70% accuracy. DN: **HW Check- Refraction and Lenses Booklet ACT: Introduction to Eye Parts and Functions Correction for nearsightedness and farsightedness Text, read p. 125-128 **Work on Seeing Light Booklet HW: Complete Seeing Light Booklet; SVQ2 Quiz (erosion- magnetic-force, week of Dec 8); Work on Sound & Light Review Sheets; Light Exam, Monday, Dec 8; Energy Exam, Dec 19; Electricity & Magnetism, January.

2. Eye Parts and Functions Cornea: clear membrane between environment and inner eye that prevents pollutants (microorganisms, dust) from entering eye. Iris: controls amount of light entering eye Pupil: opening into eye Lens: focuses light onto retina Retina: converts light energy into electrical energy; contains rods (black, white, grey) and cones (color; ROY G BIV) Optic Nerve: sends electrical signal to brain

4. How Do We See? Convex Lens Real Image Optic Nerve

5. Correcting Vision Nearsightedness: long eye focal point in front of retina Concave Lens moves focal point back onto retina Farsightedness: short eye focal point is behind retina Convex lens moves focal point back onto retina