Grade 1 · Math · Unit
Addition and Subtraction Within 10
7 lessonsabout 4 weeks
The unit ends with three more days: a review day, the unit check, and a day to act on what the check showed.
Unit 1 of 8 in the Grade 1 Math Scope and Sequence
What's included in this unit
- 7 lessons in teaching order, each with its objective and a teacher note
- 29 practice pages to print, with an easier and a harder page where available
- 4 classroom tools for the projector
- 7 activities and pages that children do on a screen
- 6 check-up pages to collect
- A worksheet maker for every lesson, for the day you need one more page
The whole unit in one file
Print every page of the unit at once, with the teacher guide first. The guide has one page per lesson: the objective, what to hand out, and the teacher note.
The unit file, the teacher guide, and saved pages are included with the Teacher plan.
Your PDF is built in your browser, so it always has the newest version of every page.
Lessons
Lesson 1
Add two groups
Children join two groups with a total of up to 10, count how many there are altogether, and write the total as a number.
- StandardCommon Core 1.OA.C.6Operations and Algebraic Thinking
- ReviewsCommon Core K.OA.A.2Operations and Algebraic Thinking
2 class days
- Day 1Teach: Practice on paper (Core page)
- Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page
Practice on paper
Add the Pictures
Domino Math
Practice on screen
Lesson 2
Take away: how many are left?
Children look at a group of up to 10 pictures with some crossed out, count how many are left, and write that number.
- StandardCommon Core 1.OA.C.6Operations and Algebraic Thinking
- ReviewsCommon Core K.OA.A.2Operations and Algebraic Thinking
2 class days
- Day 1Teach: Practice on paper (Core page)
- Day 2Practice and check: More pages from the maker · Practice on screen · Check-up page
Practice on screen
Lesson 3
Partners that make 10
Children find the number that goes with a given number to make 10, and know the pairs that make 10.
- StandardCommon Core 1.OA.C.6Operations and Algebraic Thinking
- ReviewsCommon Core K.OA.A.4Operations and Algebraic Thinking
2 class days
- Day 1Teach: Ten Frame · Practice on paper (Core page)
- Day 2Practice: Practice on paper (Easier page, Harder page) · Practice on screen
Warm up and teach
Practice on paper
Make 10!
Addition Maze for 1st Grade: Sums That Make 10
Practice on screen
Lesson 4
Count on and count back on a number line
Children add by hopping forward and subtract by hopping back on a number line, starting from the first number.
- StandardCommon Core 1.OA.C.5Operations and Algebraic Thinking
3 class days
- Day 1Teach: Number Line · Practice on paper (Core page)
- Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page
- Day 3Reteach and extend: Act on the check-up pages: reteach the children who are not there yet, with the tool and a new page from the maker; the others take a harder page.
Warm up and teach
Practice on paper
Count On!
Count Back!
Practice on screen
Lesson 5
Fact families to 10
Children use three related numbers to write the two addition facts and the two subtraction facts that belong together.
- StandardCommon Core 1.OA.B.3Operations and Algebraic Thinking
- StandardCommon Core 1.OA.B.4Operations and Algebraic Thinking
- StandardCommon Core 1.OA.C.6Operations and Algebraic Thinking
2 class days
- Day 1Teach: Practice on paper (Core page)
- Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page
Practice on paper
Fact Families to 10
Fact House Practice to 10
Practice on screen
Lesson 6
Find the missing number
Children find the unknown number in an addition or subtraction equation within 10, in any position.
- StandardCommon Core 1.OA.D.8Operations and Algebraic Thinking
3 class days
- Day 1Teach: Number Balance · Practice on paper (Core page)
- Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page
- Day 3Reteach and extend: Act on the check-up pages: reteach the children who are not there yet, with the tool and a new page from the maker; the others take a harder page.
Warm up and teach
Practice on paper
Missing Number Problems to 10
What Is Missing?
Practice on screen
Lesson 7
Fact fluency within 10
Children add and subtract within 10 without counting every time, using facts they know and facts they can figure out.
- StandardCommon Core 1.OA.C.6Operations and Algebraic Thinking
- Prepares forCommon Core 2.OA.B.2Operations and Algebraic Thinking
3 class days
- Day 1Teach: Rekenrek · Practice on paper (Core page)
- Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page
- Day 3Reteach and extend: Act on the check-up pages: reteach the children who are not there yet, with the tool and a new page from the maker; the others take a harder page.
Warm up and teach
Practice on paper
Mental Math to 10
Practice on screen
Unit check: before and after
Two short paper checks made from this unit's own worksheets. Give Check A before you teach the unit and Check B after it, and you can see what changed. Each part belongs to one lesson.
- Part 1: Lesson 1, Add two groups (2 tasks)
- Part 2: Lesson 2, Take away: how many are left? (1 task)
- Part 3: Lesson 3, Partners that make 10 (1 task)
- Part 4: Lesson 4, Count on and count back on a number line (1 task)
- Part 5: Lesson 5, Fact families to 10 (2 tasks)
- Part 6: Lesson 6, Find the missing number (2 tasks)
- Part 7: Lesson 7, Fact fluency within 10 (2 tasks)
Printing a check counts as a download, like any worksheet.
The answer keys and the teacher pages come with the paid Teacher plan.
This is a classroom check of this unit's lessons. It is not a standardized test, and its points are not a grade.