2.2.B.05 - Develop estimation strategies by applying prior knowledge of length and using mental benchmarks – Exit Ticket

What is the most reasonable estimate for the length of a push pin?

What is the most reasonable estimate for the length of a classroom door?

What is the most reasonable estimate for the length of a pair of student scissors?

Estimate the length of your desk. (Remember the width of your pinky is about 1 cm.)

How does knowing that an unsharpened pencil is about 20 cm long help you estimate the length of your arm from your elbow to your wrist?