Download File - BCA Second Grade

EnVision Math Unit Lesson Plan
Grade Level: Second Grade
Topic 11: Three-Digit Addition
and Subtraction
Instructional Emphasis: Numbers and Operations in Base Ten
Big Ideas:






There are a variety of ways to add three-digit numbers.
There is more than one way to do a mental calculation. Techniques
for doing addition or subtraction calculations mentally involve
changing the number or the expression son the calculation is easy to
do mentally.
The standard addition algorithm for three-digit numbers breaks the
calculation into simpler calculations using place-value starting with
the ones, then the tens, and then the hundreds.
There is a variety of ways to subtract three-digit numbers.
The standard subtraction algorithm for three-digit numbers breaks
the calculation into simpler calculations using place-value starting
with the ones, then the tens, and then the hundreds.
Some problems can be solved by reasoning about the conditions in
the problem.
Lesson 1:
Exploring Adding ThreeDigit Numbers
Vocabulary:
Vocabulary:
Objective:
Children will explore
different strategies for
adding three-digit numbers.
Objective:
Children will add three-digit
numbers mentally without
regrouping.
Materials:
Place-Value Blocks
11.1
11.3
11.4
11.5
Content Reviewed:
Add Three Numbers;
Identify Place-Value
Relationships; Compare
Numbers to 1,000
Materials:
Place-Value Blocks
11.1
Standard:
Lesson 2:
Mental Math
Content Reviewed:
Subtract 10; Explore Adding
Three-Digit Numbers; Order
Multi-Digit Numbers; Recall
Basic Addition Facts
Standard:
2.NBT.7; 2.NBT.8;
Common Core Standards:
2.NBT.7; 2.NBT.8; 2.NBT.9
Essential Questions:









What strategies can you use to add three-digit numbers?
How can you use mental math to add multiples of 100 to a threedigit number?
How can you model and record adding 2 three-digit numbers?
How do you add 2 three-digit numbers using paper and pencil?
What strategies can you use to subtract three-digit numbers?
How can you count on or count back to find a missing part?
How can you regroup a hundred when you need to subtract more
tens than are present in the tens place?
How do you subtract 2 three-digit numbers using paper and
pencil?
How can you use logical reasoning to help solve a problem?
Lesson 3:
Models for Adding with
Three-Digit Numbers
Vocabulary:
Objective:
Children will use placevalue blocks to add 2 threedigit numbers with
regrouping.
Materials:
Place-Value Blocks
11.3
11.4
11.5
Content Reviewed:
Apply Expanded Notation;
Use Mental Math to Add;
Three-Digit Addition
Standard:
Created by Mike Skazinski 2014
Lesson 4:
Adding Three-Digit Numbers
Vocabulary:
Objective:
Children will use paper and
pencil to add 2 three-digit
numbers with regrouping.
Materials:
11.3
11.4
11.5
Content Reviewed:
Skip Count by 10s; Add
Two-Digit Numbers; Identify
Expanded Notation
Lesson 5:
Exploring Subtracting
Three-Digit Numbers
Vocabulary:
Objective:
Children will explore
different strategies to
subtract three-digit
numbers.
Materials:
Place-Value Blocks
11.9
11.10
11.11
Content Reviewed:
Compare Numbers; Add
Three-Digit Numbers
Standard:
2.NBT.7; 2.NBT.9
Standard:
2.NBT.7
2.NBT.7; 2.NBT.8;
2.NBT.9
Assessment
2.NBT.9
Assessment
2.NBT.9; 2.NBT.7
Assessment
Assessment
Topic 11 Introduction
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Reteaching, Practice, and
Enrichment Homework
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Reteaching, Practice, and
Enrichment Homework
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Reteaching, Practice, and
Enrichment Homework
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Reteaching, Practice, and
Enrichment Homework
Lesson 6:
Mental Math: Ways to Find
Missing Parts
Vocabulary:
Lesson 7:
Models for Subtracting with
Three-Digit Numbers
Vocabulary:
Lesson 8:
Subtracting Three-Digit
numbers
Vocabulary:
Lesson 9:
Problem Solving: Use Logical
Reasoning
Vocabulary:
Objective:
Children will be given a
quantity and one its parts,
and then will find the
missing part by counting on
or counting back.
Objective:
Children will use models to
subtract three-digit numbers
with regrouping.
Objective:
Children will subtract threedigit numbers using a
standard algorithm.
Objective:
Children will use logical
reasoning to solve problems.
Materials:
Place-Value Mat B
11.9
11.10
11.11
Materials:
11.9
11.10
11.11
Materials:
Place-Value Blocks
11.7
Content Reviewed:
Order Three-Digit Numbers;
Identify Numbers as Odd or
Even; Add Three-Digit
Numbers; Subtract TwoDigit Numbers
Content Reviewed:
Find Missing Parts; Add
Three-Digit Numbers;
Identify Place-Value
Relationships
Standard:
Standard:
2.NBT.7; 2.NBT.8;
2.NBT.9
2.NBT.9; 2.NBT.7
Assessment
Daily Common Core Review
Assessment
Daily Common Core Review
Materials:
11.12
11.8
11.6
Content Reviewed:
Add Three-Digit Numbers;
Subtract Two- and ThreeDigit Numbers; Subtract
Three-Digit Numbers
Content Reviewed:
Use Mental Math to Add;
Identify Relationships
Between Digits; Compare
Three-Digit Numbers
Standard:
Standard:
2.NBT.7; 2.NBT.9
2.NBT.7
Assessment
Daily Common Core Review
Created by Mike Skazinski 2014
Assessment
Daily Common Core Review
Assessment
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Reteaching, Practice, and
Enrichment Homework
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Reteaching, Practice, and
Enrichment Homework
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Reteaching, Practice, and
Enrichment Homework
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Reteaching, Practice, and
Enrichment Homework
Created by Mike Skazinski 2014
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Reteaching, Practice, and
Enrichment Homework
Topic 11 Assessment