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Directly compare two objects by a measurable attribute

Students will place two objects side by side (or balance them) to directly compare them on a specific attribute such as length or weight, and use language like 'longer than,' 'shorter than,' 'heavier than,' or 'lighter than' to describe the comparison.

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Directly compare two objects by a measurable attribute

Kindergarten · Measurement and Attributes · question 1 of 3

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12 rungs. A star at the top.

ABCD

Tap the shortest.

How it is taught

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A balance shows which object is heavier.

The down side is the heavier side.

Read it: Line them up to compare

2 ribbons side by side. Line them up at one end: the one that sticks out farther is longer.

  1. Put the ends together on one side.
  2. Look at the other ends.
  3. The one that sticks out farther is longer.

If the ends do not start together, a short thing can look long.

Lining up at one end makes the difference easy to see.

The shorter one stops first.

Line up one end. The one that sticks out is longer.

Comparing without lining up the ends.

Line up one end first, then look at the other end.

Which is longer: 9 cubes or 6 cubes? — 9. 9 cubes is longer than 6 cubes.

Which pencil is longer?

Today we'll compare two objects. Which pencil do you think is longer?

Here are two pencils. But wait — they aren't lined up yet, so it's tricky to tell.

First, let's line up their ends right at this dotted line.

Now look closely! One pencil sticks out farther on the right.

Which pencil is longer?Let's find out by lining them up!redblueHmm — they don't start at the same spot.start hereredblueextra!longershorterred is longer than blueANSWERRedis longer
Kindergarten · Lining up to compare length

The red pencil is longer than the blue pencil.

And the blue pencil is shorter than the red pencil.

When we line two things up side by side, we can directly compare them. Great work!

What you see

While they climb, your page writes one true line to ask about tonight, and a short note each Sunday.

MayaGrade 3 · Mathematics
Did you know?

A chessboard has 64 squares — share them out between the 8 rows and each row holds exactly 8.

Today’s goal
1 star — one skill mastered, every rung of its ladder climbed
Climbing now
Divide within 100

An example student.

MayaGrade 3 · Mathematics

Maya earned 2 stars this week — Interpret multiplication as equal groups, which took 6 answers over 3 days before its star landed 3 days ago and Multiply by 6, 7, 8 and 9. Next up: Divide within 100.

An example week.

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