2nd Grade · Math · 2.NBT.B.5
Fact Families Lesson Plan for 2nd Grade
A ready-to-teach fact families lesson for 2nd Grade. Everything below is classroom-tested structure: an objective, a 45-minute sequence, a way to check who got it, and 2 printable practice pages.
Approximately 45 minutes
Learning objective
- Write all four related addition and subtraction facts in a family
- Identify the three numbers that form a fact family triangle
- Recognize inverse relationships between addition and subtraction
Materials
- Fact families - Beach Ball
- Fact families - Snake
- Pencils, and whiteboard space for the modeled examples
Lesson steps
1. Warm up together (5 min)
Open with three quick mental problems on fact families, hands down, answers called out together. You are checking who has recall and who is reconstructing every time.
2. Model it (I do) (10 min)
Solve two fact families problems on the board, narrating the step most students skip. Then solve one wrong and ask the class to find where it broke.
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 "Fact families - Beach Ball". 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 fact families retaught in a small group before the class moves on.
Differentiation
Extra support. Students who stall: pull them into a small group and rebuild fact families 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 fact families 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 fact families.
Skills covered in this lesson
Fact families
