1. OBJ: Given microscope activity sheet SWBAT determine the field of view using a grid slide and measure the length of a microscopic organism with 85% accuracy. DN: Hand-in Constructed Response #3 Packet; Comment about Lab Practical Slip (What class will you be missing? Teacher’s Name?). DO NOT TOUCH EQUIPMENT FOLLOW TEACHERS INSTRUCTIONS ACT: Introduction to Measuring with a Microscope Complete Measuring with a Microscope Activity Sheet. HW: Work on Constructed Response #4 Packet (pie graph) due Thursday May 22; Lab Practical May 27, P.1-small gym, P.9- room 118; NYSSAE June 2; Final Exam June ?

2. Microscope Notes Ocular = top lens Objective = bottom lenses (red, yellow, blue) Use only red lens. WARNING: if you use yellow or blue lens, YOU CAN BREAK LENS AND/OR GLASS SLIDE If you drop a glass slide or break a lens, YOU ARE HELD ACCOUNTABLE, RESPONSIBLE.

3. Microscope Notes GRID SLIDE Field of View Measure to nearest tenth Example: 1.0 mm 2.5 mm 3.5 mm

4. Measuring Field of View & Organism Each box = 1.0 mm ____ mm

5. Microscope Activity 1] Turn on Microscope Make sure you are using RED lens. 2] Use grid slide. If each box is 1 mm, What is the field of view? 3] Observe Daphnia. What is its length?