# Helping Grandmother

Jackson's grandmother is moving to a new house. Grandmother has eighty-seven boxes for Jackson to put in the truck! Jackson puts thirty-one boxes in the truck before breakfast. Jackson puts thirty-six boxes in the truck before lunch. Jackson puts fourteen boxes in the truck before dinner. How many boxes are left for Jackson to put in the truck after dinner? Show all your mathematical thinking.

### More Accessible Version

Jackson's grandmother is moving to a new house. Grandmother has sixty-eight boxes for Jackson to put in the truck! Jackson puts twenty-one boxes in the truck before breakfast. Jackson puts twenty-six boxes in the truck before lunch. Jackson puts fourteen boxes in the truck before dinner. How many boxes are left for Jackson to put in the truck after dinner? Show all your mathematical thinking.

### More Challenging Version

Jackson's grandmother is moving to a new house. Grandmother has one hundred twenty boxes for Jackson to put in the truck! Jackson puts thirty-two boxes in the truck before breakfast. Jackson puts fifty-one boxes in the truck before lunch. Jackson puts thirty-one boxes in the truck before dinner. How many boxes are left for Jackson to put in the truck after dinner? Show all your mathematical thinking.

## Plan

#### Underlying Mathematical Concepts

#### Possible Problem-Solving Strategies

#### Formal Mathematical Language and Symbolic Notation

A student may independently select a printed number line, number chart, ten frames, graph paper, etc. as they work on a task.

### Suggested materials

Engagement Image:

Teachers may project the images below to launch this task for their students, define nouns, promote discussion, access prior knowledge, and inspire engagement and problem solving.