First graders learn to measure and compare how long things are — lining up units end to end with no gaps — and to describe objects as longer or shorter, building the foundation for all measurement.
Students will be able to…
Is your pencil longer than your friend’s? How can we find out exactly how long something is — and know for sure?
Project this and tap each idea about measuring length. Practice comparing longer and shorter, and lining up units!
Tap any phase to open the teacher moves and student actions.
Is your pencil longer than your friend’s? How can we tell?
Teacher models.
Class uses the Length Explorer.
Students measure.
One measurement.
Aligned to the Common Core State Standards for Mathematics.
Order three objects by length; compare the lengths of two objects indirectly.
Express the length of an object as a whole number of length units.
Organize and represent length data.
Use appropriate measuring tools strategically.
Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.
Have families measure things with fun units — how many footsteps across the room, how many spoons long the table is — lining them up with no gaps. A printable measuring sheet is in the Math library.
Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.
A quick self-check with instant feedback, drawn from this lesson’s key terms.
A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.