Standard 1.4 The properties of materials and organisms can be descried more accurately through the use of standard measuring units.
  • 1.4.1 Observations can be expressed in words, pictures or numbers. Measurements add accuracy to observations.
  • 1.4.2 Objects and organisms can be described using nonstandard measurement units, such as hand-lengths, pencil-lengths, handfuls, etc.
  • 1.4.3 Standard measurement units are more accurate than nonstandard units because they have consistent values agreed on by everyone.
For example, "My caterpillar is one finger long." is much less accurate than "My caterpillar is 4 centimeters long."

Use standard and nonstandard measurement at home and at school.


At dinner children can measure how many noodles it takes to go across a dinner plate.
How many square crackers does it take to cover a placemat?
How many hands tall is a bed?


Students can make predictions and use simple classroom objects to measure things in the room.
How many small paperclips wide is a desk?
How many large paperclips wide is a desk?
How many square tiles to cover a textbook?

Curious George.jpg
Click on Curious George to use nonstandard units to measure.

Sid the Science Kid.jpg
Click on Sid the Science Kid to use standard units to measure.

Inch Worm Measurement Lesson Plan