Join the beta

Curriculum › Math ›Grade 2

Grade 2 Math · Level 2, Relationships and Applied Basics

Number Relationship / Difference Grid

Recognize and apply consistent relationships such as 1, 10 or 100 more or less.

Questions like

  • If 27→28, what is 17→?

How the lesson starts: Number Relationship / Difference Grid

  1. Robo's magic machine

    Hi friend! This is Robo's magic number machine. Put a number in, and a new number pops out. The machine follows one secret rule. Can you crack the rule?

  2. The one-more rule

    Put in 27, and out comes 28. Put in 45, and out comes 46. The rule is one more! So put in 17, and out comes 18.

  3. Crack it and use it

    Pip walks from mile 39 to mile 40. Kit walks the same way from mile 69. Where does Kit stop? First crack the rule: 39 to 40 is one more. Now use it. 69 + 1 = 70!