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12) Equation

Bonds of 5: Building 

12.1 Equation Building

Mathematics

Develop the concept of related addition and subtraction equations, rearranged using the part-part-whole relationship, for two-part bonds of 5.

Language

  • part-part-whole: where the two parts are a bond of the whole number.
  • equals, is equal to
  • addition, add
  • subtraction, subtract, take away

Core Activity Support Materials

Differentiation

A little easier

A little harder

Interleaving: Addition and Subtraction

Use the Bonds of 5: Equation Building core activity board however work horizontally in rows, instead of vertically in columns. This is more difficult because students need to change between addition and subtraction frequently.

Check the whole is written in the correct position for subtraction equations.

Progression

Apply the concept of building related addition and subtraction equations, using part-part-whole, to find missing parts in addition and subtraction equations. Go to

Activity 13

Bonds of 5: Missing Number Equations, Fill a Row