The Intervention Table below provides links to interventions specific to this unit. The interventions support students and teachers in filling foundational gaps revealed as students work through the unit. All listed interventions are from New Zealand’s Numeracy Project.



Cluster of Standards

Name of Intervention

Snapshot of summary or

Student I can statement. . .

Materials Master

Numbers and Operations in

Base Ten

Use place value understanding and properties of operations to perform multi-digit arithmetic





Rounding: Closest to

Round to the nearest ten or hundred




Round to the nearest ten or hundred


Rounding to the Nearest 100

Round to the nearest hundred


Find the Biggest Total

Develop knowledge of place value – tens and ones in a number


Blast 1000

Practice counting backwards and forwards from 100-1000, identify ten more/less and 100 more/less



Recall groupings within 100

MM 4-14


Jumping the Number Line

Solve addition and subtraction problems using tidy numbers

MM 4-8

MM 5-12

Don’t Subtract – Add!

Solve subtraction problems by using addition

MM 4-9

Something’s Hiding

Determine how many tens and ones are hidden



Addition and subtraction to 100

MM 4-34

Measurement and Data

Represent and interpret data




Worms and More

Compare the length of objects beginning at the same starting point