SCIENTIFIC METHOD / MEASUREMENT COMPANIONS
Use the same sketchnotes from class. Open a panel, explore what changes, then add a note and color as you review.
The sheets and written reminders below work even without the interactive tools. Print the blank sheets for class or open a colored reference to review.
Meter (m) is a shared length unit. One meter contains 10 dm, 100 cm or 1,000 mm. One dam is 10 m; one hm is 100 m; one km is 1,000 m.
Smaller units need a larger count for the same positive length. Changing a unit does not change the length.
Name → Scale → Predict → Cancel → Check. When multiplying, matching units in the numerator and denominator cancel. An equivalent conversion factor changes the unit, not the amount.
0.05 km = 50 m = 5,000 cm.
422 dg = 42.2 g = 42,200 mg.
Khan Academy: Metric system part 1 (Q2rYdBURfaA) and Mastering metric conversions (w0nqd_HXHPQ). The interactive amounts are practice models; the two presets above match the video examples.