Download File - BCA Second Grade

Math Unit Lesson Plan
Grade Level: Second Grade
Topic 8: Adding Two-Digit Numbers
Common Core Standards:
Instructional Emphasis:
Big Ideas:
Essential Questions:
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Numbers and Operations in Base Ten
2.NBT.5; 2.NBT.6; 2.NBT.9; 2.MB.6; 2.OA.1
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How can you use models to add a one-digit number to a
two-digit number?
 How can you model and record adding a one-digit number
to a two-digit number?
 How can you use paper and pencil to add one-digit
numbers to two-digit numbers?
 How can you use place-value models and the standard
algorithm to add a two-digit number to a two-digit
number?
 How can you use paper and pencil and the standard
algorithm to add a two-digit number to another two-digit
number?
 How do you use a number line to show addition?
 Can you add three or four numbers in any order?
 How do the addends determine the choice of adding
methods?
 How can you solve a problem using pictures and number
sentences?
Day 3:
Day 4:
Day 5:
Adding Two- and One-Digit
Models to Add Two-Digit
Adding Two-Digit
Numbers
Numbers
Numbers
Vocabulary:
Vocabulary:
Vocabulary:
1: 10 ones can be regrouped for 1 ten.
2 & 3: The standard addition algorithm for two-digit and one-digit numbers
breaks the calculation into simpler calculations using place value, starting
with the ones and then the tens. Answers to the simpler calculations are
used to give the final sum.
4 & 5: The standard algorithm for adding two-digit and two-digit numbers is
just and extension of the algorithm for adding two-digit and two-digit
numbers. The ones are added first and then the tens.
6: Sums can be represented as lengths on a number line diagram of addition.
7: Three and four two-digit numbers can be grouped and added in any
order.
8: All sums and differences can be found using models (cubes). Some
calculations are done easily using mental math or paper and pencil. More
complex calculations can be done using a calculator.
9: Information in a problem can often be shown using a diagram to solve the
problem. Some problems can be solved by writing and completing a number
sentence or equation.
Day 1:
Regrouping 10 Ones for 1
Ten
Vocabulary:
regroup
Objective:
Children will use models to
add a one-digit number to a
two-digit number.
Materials:
Lesson 5.1
Base 10 blocks
iPad base 10 app
Content Reviewed:
Order Numbers to 99; Find
the Number After; Write an
Addition Sentence; Adding
Ones
Day 2:
Models to Add Two- and
One-Digit Numbers
Vocabulary:
Objective:
Children will use concrete
models to add a one-digit
number to a two-digit
number and decided if
regrouping is needed.
Materials:
Lesson 5.2
Base 10 blocks
iPad base 10 app
Content Reviewed:
Add 2 Two-Digit Numbers;
Decide Whether to Regroup;
Add Tens; Add Doubles
Objective:
Children will add a one-digit
number to a two-digit
number, regroup if
necessary, and record the
process in a vertical
addition.
Materials:
Lesson 5.2
Base 10 blocks
iPad base 10 app
Content Reviewed:
Find a Difference Mentally;
Complete a Number
Pattern; Decide Whether to
Created by M. Skazinski 2013-2014
Objective:
Children will use place-value
models and the standard
algorithm to add 2 two-digit
numbers.
Materials:
Lesson 5.2
Base 10 blocks
iPad base 10 app
Content Reviewed:
Odd and Even Numbers;
Identify Number Names;
Add Two- and One-Digit
Numbers; Solve an Addition
Problem
Objective:
Children will use the
standard algorithm
symbolically to add twodigit numbers, with and
without regrouping.
Materials:
Lesson 5.2
Base 10 blocks
iPad base 10 app
Content Reviewed:
Add Two- and One-Digit
Numbers; Find Patterns;
Add Three Numbers
Standard:
2.NBT.5; 2.NBT.9
Standard:
2.NBT.3; 2.NBT.9
Regroup; Missing or Extra
Information
Standard:
2.NBT.5; 2.NBT.9
Assessment
Topic 8 Introduction
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Quick Check Master
Center Activity
Reteaching, Practice, and
Enrichment Homework
Day 6:
Adding on a Number Line
Vocabulary:
number line
Objective:
Children will use number
lines to model two-digit
addition
Materials:
Notebook
Content Reviewed:
Find Related Addition Facts;
Names for Numbers to 99;
Write a Repeated Addition
Sentence; Mental Addition
of Two-Digit Numbers
Standard:
2.MD.6; 2.NBT.5;
2.NBT.6; 2.NBT.9
Assessment
Assessment
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Quick Check Master
Center Activity
Reteaching, Practice, and
Enrichment Homework
Day 7:
Adding More Than Two
Numbers
Assessment
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Quick Check Master
Center Activity
Reteaching, Practice, and
Enrichment Homework
2.NBT.5; 2.NBT.6;
2.NBT.9
Assessment
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Quick Check Master
Center Activity
Reteaching, Practice, and
Enrichment Homework
Vocabulary:
Vocabulary:
Day 9:
Problem Solving: Draw a
Picture and Write a Number
Sentence
Vocabulary:
Objective:
Children will use paper and
pencil to add 3 and 4 twodigit numbers.
Objective:
Children will use different
methods to help them solve
addition problems.
Objective:
Children will draw pictures
and write number sentences
to solve addition problems.
Materials:
Number Cubes
Materials:
Lesson 5.2
Base 10 blocks
iPad base 10 app
Materials:
Lesson 5.2
Base 10 blocks
iPad base 10 app
Content Reviewed:
Add Two-Digit Numbers;
Order Two-Digit Numbers;
Decide Whether to
Regroup; Add on a Number
Line
Content Reviewed:
Find Number Patterns;
Compare Numbers to 99;
Add 3 Two-Digit Numbers
Content Reviewed:
Mentally Compute Sums;
Add Two-Digit Numbers;
Find the Nearest Ten; Add
Two-Digit Numbers
Standard:
2.NBT.6; 2.NBT.5;
2.NBT.9
Day 8:
Ways to Add
Standard:
Standard:
Standard:
Standard:
2.NBT.5; 2.OA.1
2.NBT.5; 2.NBT.6;
2.NBT.9
Assessment
Assessment
Created by M. Skazinski 2013-2014
Assessment
2.NBT.5; 2.NBT.6;
2.NBT.9
Assessment
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Quick Check Master
Center Activity
Reteaching, Practice, and
Enrichment Homework
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Quick Check Master
Center Activity
Reteaching, Practice, and
Enrichment Homework
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Quick Check Master
Center Activity
Reteaching, Practice, and
Enrichment Homework
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Quick Check Master
Center Activity
Reteaching, Practice, and
Enrichment Homework
Created by M. Skazinski 2013-2014
Daily Common Core Review
Problem-Based Interactive
Learning
Guided Practice
Independent Practice
Problem Solving
Quick Check Master
Center Activity
Reteaching, Practice, and
Enrichment Homework
Topic 8 Assessment