Better Lesson
Better Lesson: Subtracting With Partners of 100
When subtracting ten from a 2 digit number, 2nd graders should be able to compute the answer as fluently and comfortably as do when they add ten to a 2 digit number.
Better Lesson
Better Lesson: Where on the Line?
Do you know where a number would be? Can you use a number line as a tool to solve problems?
Better Lesson
Better Lesson: Change Unknown Word Problems With Number Lines
Second graders solve change unknown story problems using a number line. This lesson gives students a new strategy to attach change unknown word problems.
Better Lesson
Better Lesson: Manipulation Central
Not everyone solves a problem in the same way. Reinforcing that different strategies can be used effectively is the goal of this instructional activity.
Better Lesson
Better Lesson: Mentally Speaking!
Using base ten blocks and place value, 2nd graders explore how to become more fluent in adding and subtracting two-digit numbers without regrouping.
Better Lesson
Better Lesson: The Neighbors of Doubles
The big idea of this lesson is that students can solve for near doubles by thinking of the related doubles fact.
Better Lesson
Better Lesson: More Than Two Numbers
The big idea of this lesson is that three (or more) numbers can be grouped together and added. The order of this grouping doesn't matter.
Better Lesson
Better Lesson: Moving Along in Tens
Grouping by tens reinforces the understanding of place value
Better Lesson
Better Lesson: Making a Ten
Making ten is one of the foundational strategies for developing flexible numerical thinking, accuracy, and efficiency.
Better Lesson
Better Lesson: Double Trouble
Second graders can think about doubles facts as world situations to help commit them to memory.
Better Lesson
Better Lesson: Domino Addition: Understanding the Part/part/whole Relationship
The big idea of this instructional activity is the understanding that addition can be represented as parts of a whole and that we can use addition sentences to represent those parts.
Better Lesson
Better Lesson: Excellent Mathematical Explanations
Second graders use place value vocabulary to write excellent mathematical explanations about why a comparison statement is true or false.
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Place Value, Counting, and Comparison of Numbers to 1000
A guide to support parents as they work with their students in place value, counting, and comparison of numbers to 1000.
PBS
Pbs Learning Media: Pbs Kids: Odd Squad: Collection
Welcome to Odd Squad: the zaniest, craziest team of kid investigators around! Explore content below targeted at making elementary-level math a fun, imaginative experience, mixing concepts like arithmetic and geometry with fantastical...
Other
Nearpod: Place Value: Fall Edition
For this lesson, young scholars will use base ten blocks and a place value chart to show their understanding of two-digit and three-digit numbers. They will also use place value to compare numbers.
E-learning for Kids
E Learning for Kids: Math: Sheep Farm: 3 Digit Numbers
Help Jack on his sheep farm and learn more about 3-digit numbers.
Cyberbee
Adventures of Cyberbee: Add & Subtract (Lesson Plan)
Teacher directed lesson plan that focuses on number operations, particularly addition and subtraction.
Fun Brain
Fun Brain: Operation Order (Learning Game)
Players help Tortisaurus build a pyramid by assembling equations that match particular answers. Involves the application of whole-number addition, subtraction, multiplication, and division skills.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Adding and Subtracting 100 [Pdf]
Students can practice addition and subtraction of 100 on a number line with this activity.
Ducksters
Ducksters: Practice Math Answers: Single Digit Subtraction
This site contains answers to single-digit subtraction problems.
Ducksters
Ducksters: Practice Math Answers: Triple Digit Addition
Find answers to the triple-digit addition problems on this site.
Soft Schools
Soft Schools: Addition and Subtraction Game
Students enter the answer to mixed addition and subtraction problems. Score is kept.
Math Is Fun
Math Is Fun: Addition Table
Find an addition table as well as instruction on how to use it.