2nd Grade · Math · 2.NBT.B.5
Addition Lesson Plan for 2nd Grade
A ready-to-teach addition lesson for 2nd Grade, built around two-digit addition with regrouping, adding within 100 and 1000, word problems. Print the plan, print the practice pages, and you are set.
Approximately 45 minutes
Learning objective
- Solve addition equations with sums up to 10
- Build fluency with basic addition facts within ten
- Recognize number combinations that make ten
Materials
- Add a 2-digit and 1-digit number, no regrouping - Purple Notebook
- Add a 2-digit number and a 1-digit number (missing addend) - Donut
- Add four 1-digit numbers - Blocks
- Add two 2-digit numbers (no regrouping) - Drone
- Adding whole tens, 3 addends
- Adding whole tens, 4 addends
- Pencils, and whiteboard space for the modeled examples
Lesson steps
1. Warm up together (5 min)
Open with a quick count-around or number talk that touches addition. Ask students where they have seen addition outside of math class. You are listening for who already has the vocabulary and who does not, so keep it light and let several students answer.
2. Model it (I do) (10 min)
Work two examples of addition on the board, thinking out loud the whole way. Say the quiet parts: what you notice first, which step you do next, and why. Deliberately make one small error on the second example and let the class catch it.
3. Practice together (we do) (10 min)
Work three more problems as a class. Ask a different student to supply each step rather than the whole answer. If a step stalls, drop back to concrete objects or a drawing before moving on.
4. Independent practice (you do) (15 min)
Hand out "Add a 2-digit and 1-digit number, no regrouping - Purple Notebook". Students work independently while you circulate. Note who is fluent, who is counting on fingers, and who has not started, because that grouping drives tomorrow's small group.
5. Close the loop (5 min)
Pull the class back. Ask one student to explain a problem they got right and one to name something that is still confusing. End on the confusion, not the success, so students learn that naming a gap is normal.
Check for understanding
Collect the practice pages and sort them into three piles: fluent, developing, and not yet. Any student in the third pile needs addition retaught in a small group before the class moves on.
Differentiation
Extra support. Students who stall: pull them into a small group and rebuild addition with concrete materials or a simpler text before asking for the written work again. Do not send the page home as homework, it will just rehearse the misunderstanding.
Extension. Students who finish early: ask them to write their own addition problem for a partner to solve, then check the partner's work. Creating a problem is harder than solving one and it surfaces whether they really understand addition.
Skills covered in this lesson
Adding within 0-10 · Adding within 0-10 - missing addend · Add a 2-digit and 1-digit number, no regrouping · Add a 2-digit number and a 1-digit number, missing addend · Add two 2-digit numbers, no regrouping · Add two 1-digit numbers · Add two 1-digit numbers, missing addend · Add 3 numbers · Add 3 numbers, missing addend · Add 4 numbers · Add 4 numbers, missing addend · Adding whole tens
