Compare two quantities (more, less, equal) up to 10 — concrete first, then symbols >, <, =
Exercise Difficulty 2 ~2 min math.gK.f.ns.compare_quantities.ex_01

Line Up And Compare

Prompt

Build a tower of 6 red cubes and a tower of 4 blue cubes. Stand them side by side. Which is more? How do you know?

M-K-F-EX-21-A Photograph
Photo: red unifix-cube tower (6 cubes) and blue unifix-cube tower (4 cubes) standing side by side on a white desk. Red i

Photo: red unifix-cube tower (6 cubes) and blue unifix-cube tower (4 cubes) standing side by side on a white desk. Red is clearly taller by 2 cubes. Arrow labeled '2 EXTRA' points to the top 2 red cubes above the blue tower height.

How it's presented
mode manipulative manipulative unifix cubes red and blue
Answer criteria
type comparison with justification
rubric
Identifies red as more; justifies by height-comparison or by 2 extra cubes after matching.
expected
red has more
Hints
  1. Stand the towers next to each other.
  2. Which one is taller? Why?
Misconceptions to watch
  • Says 'they're the same' because both are 'tall.'
  • Says blue has more because blue is a 'better' color (preference confusion).
Used in lessons