What are these images Man-Made Ice Planet Jupiter

What are these images? Man-Made Ice Planet Jupiter Taste Buds (Human Tongue) Dust Mite (Bed Bug) Human Hair

Date Magnification Learning Objective (LO) L 4+ Use a formula to calculate magnification Success Criteria (SC) L 3+ I can compare magnified images. L 4+ I can calculate magnification with same units. L 5+ I can calculate magnification with different units. Key Words Magnification, Image, Microscope, Rank.

Questions How might it be possible to see images of objects that are very small? How might maths be used in the study of magnified images?

Magnification Study the eight images of objects. Most of them can only be seen when magnified by a light microscope or electron microscope. Task 1 Rank the images in order from smallest to largest. You will now view the an animation from cellsalive to check your order.

How big? The animation showed different scales of measurement: 1 mm = 1000µm (micrometers) 1 cm = 10 mm How many µm in 1 cm?

Rearrange these to find the formula for working out magnification L 4+ I can calculate magnification with same units.

Easier – Same units of measurement 20 ÷ 0. 002 = x 10, 000 Object Image Size Actual size E Coli 20 mm 0. 002 mm x Yeast Cell 10 mm 0. 006 mm x Blood cell 300 mm 0. 01 mm x Pollen Grain 40 mm 0. 5 mm Hair 6 cm 3. 5 cm 10 ÷ 0. 006 = x 1, 666. 67 Magnification 300 ÷ 0. 0 x 30, 00 6 x 3. 5 = ÷ x 1. 7 x 15 mm ÷ 0. 003 mm = x 50 Magnification Difficult – Different units of measurement Object Image Size Actual size Salmonella 1. 5 cm 0. 003 mm x Crystal 3 cm 0. 05 mm x White Cell 20 mm 20µm x Dust 25 mm 0. 1 cm x Finger Nail 5 mm 1. 5 cm x 5 mm ÷ 2015 mmm = x 0. 3 40 ÷ 0. 5 = x 80 30 mm ÷ 0. 05 mm = x 600 25 mm ÷ 201 mmm = x 25 20, 000µ ÷ 2020µm = x 1000

Questions Which calculation was the odd one out and why? Which calculation has the largest magnification? What careers may involve working with magnification of objects?

Progress Write down one thing that has helped you be successful in today's lesson Write down one thing that you need to do to improve

Easier – Same units of measurement Object Image Size Actual size Magnification E Coli 20 mm 0. 002 mm x Yeast Cell 10 mm 0. 006 mm x Blood cell 300 mm 0. 01 mm x Pollen Grain 40 mm 0. 5 mm x Hair 6 cm 3. 5 cm x Difficult – Different units of measurement Object Image Size Actual size Magnification Salmonella 1. 5 cm 0. 003 mm x Crystal 3 cm 0. 05 mm x White Cell 20 mm 20µm x Dust 25 mm 0. 1 cm x Finger Nail 5 mm 1. 5 cm x