Lesson 3 Choose Objects to Compare Length Indirectly

    • Let’s compare the length of objects that can’t be moved.

Warm-up Notice and Wonder: More Pencils

What do you notice?
What do you wonder?

Pencils in 2 groups. For each group, 2 pencils are lined up at erasers but not at the pencil point.

Activity 1 Mai and Clare Walk to School

Who has a shorter walk to school, Clare or Mai? How do you know?

Be ready to explain your thinking in a way that others will understand.

Map. Mai's house, bottom left. Arrow in between. School, bottom right.  Arrow above to Clare's house, top right. 

Activity 2 Will It Fit?

  1. Will the teacher’s desk fit through the door?
    Show your thinking using drawings, numbers, or words.

  2. Will a student desk fit through the door?
    Show your thinking using drawings, numbers, or words.

  3. Which is longer, the bookshelf or the rug?
    Show your thinking using drawings, numbers, or words.

  4. Which is longer, the file cabinet or the bookshelf?
    Show your thinking using drawings, numbers, or words.

  5. Which is shorter, the bookshelf or the teacher’s desk?
    Show your thinking using drawings, numbers, or words.

  6. Will the teacher’s desk fit next to the bookshelf?
    Show your thinking using drawings, numbers, or words.

Practice Problem

Problem 1

If needed, the table, bookshelf, and desks can be replaced with other objects in the classroom.

  1. Which is longer, the teacher’s desk or your desk?
    Show your thinking using drawings, numbers, or words.

  2. Which is shorter, the table or the bookshelf?
    Show your thinking using drawings, numbers, or words.