Activity 1 - Personal measurements You may need to work in pairs to complete this activity Measure using millimeters (mm) and then convert into cm (or the other way around) Measurement in mm Measurement in cm One large step Your height Finger tip to finger tip with arms stretched out Length of foot Arm length – elbow to wrist Across 4 fingers together Handspan – finger to thumb Now use personal measurements to measure other distances Item Pencil length example Pen length Length of macbook Estimate 1 22 times my 4 finger measurement 1 = 22 x 6.5cm = 16.25 Actual measurement 16.9 cm Width of macbook Height of desk Book width Door width Choose something to measure