SME
Grade 2 Math
Measure length in inches, feet, centimeters and meters
The main lesson, then each kind of problem it solves.
Measure length in inches, feet, centimeters and meters
Main lesson
Use a number line to add and subtract lengths
Use this for “A 35 cm ribbon and a 20 cm ribbon end to end: how long are they together?”
Broken ruler
Use this when the object doesn’t start at 0 on the ruler.
Relate inches and feet
Use this to measure the same object in feet and in inches.
Relate centimeters and meters
Use this to measure the same object in meters and in centimeters.
Choose the unit
Use this to choose centimeters or meters for a crayon, a door or a hallway.
Estimate lengths
Use this for “About how long is a crayon: 1 centimeter, 10 centimeters or 1 meter?”