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

Understand place value




Use place value understanding and properties of operations to add and subtract






“Teen and “TY” Numbers

Identify all of the numbers in the range 0-100


Building with Tens

Develop knowledge and understanding of two-digit numbers


Show Me the Number

Show two-digit numbers using place value materials


Calculator Plus Ten

Learn groupings of ten


Guess My Number

Guess hidden number between 1 and 100


More Ones and Tens


Count up to 50 objects by grouping the objects in tens.

 MM 4-14


Imaging Many Hands


Solve addition and subtraction problems within 20 by counting all the objects in their head.


Represent and interpret data


Playing Favorites

Pose, plan, analyze data


Playing Favorites

Pose, plan, analyze data


Christmas Tree

Sort objects into categories and display the results

Count the objects in a category

Devise and us problem solving strategies to explore situations mathematically


Greedy Cat

Describe, sort, compare and display pictures of cats


I Like Trucks

Collect, analyze and report information about favorites


Not Enough Drawers

Sort and analyze categories of clothes


The Garden

Sort, count, objects in categories