Curated OER
Domain: Operations and Algebraic Thinking
Practice basic operations for young mathematicians in fun ways! Using two decks of cards (Ace through 10 plus the joker), learners play "memory" by matching numbers that can be added to make 10 and writing number sentences. In another...
Curated OER
Inverse
Your class can learn all about inverse operations. They will review what inverse operations are, see examples, learn how to use inverse operation to check an answer, write addition and subtraction equations in the inverse, and use the...
Curated OER
Order of Operations: Please Excuse My Dear Aunt Sally
In this order of operations learning exercise, learners replace blank spaces in squares with the symbol for the operation that will make math sentences true.
Curated OER
Basic Mathematical Operations Using Math Tiles
Practice addition, subtraction, multiplication, and division using tiles as manipulatives. In this math operations instructional activity, young learners choose the appropriate sized tiles, arrange them according to directions given by...
Curated OER
Math Games for Skills and Concepts
A 27-page packet full of math games and activities builds on algebra, measurement, geometry, fractional, and graphing skills. Young mathematicians participate in math games collaboratively, promoting teamwork and skills practice.
Noyce Foundation
Perfect Pair
What makes number pairs perfect? The resource provides five problems regarding perfect pairs of numbers, the definition of which changes in complexity with each task. Solutions require pupils to apply number sense and operations, as well...
Noyce Foundation
Diminishing Return
Challenge individuals to compete as many tasks as possible. Lower-level tasks have pupils apply costs and rates to solve problems. Upper-level tasks add algebraic reasoning and conditional probability to the tasks.
Curated OER
Inverse Relationships (16)
In this math operations instructional activity, students use the given information to fill in each box to complete the inverse operation equations. They fill in 60 boxes as they complete the pairs of equations.
Curated OER
Inverse Relationships (C)
In this addition and subtraction inverse operations learning exercise, students fill in the blanks in 30 addition and subtraction sentences with the appropriate numbers based on inverse relationships
Curated OER
Inverse Relationships Add/Sub (E)
In this addition and subtraction inverse operations worksheet, students fill in the blanks in 16 addition and subtraction sentences with the appropriate numbers based on inverse relationships.
Curated OER
Number Puzzles
These math puzzles are sure to get your first and second graders thinking. Nine word problems about odds and evens, as well as greater than and less than, keep learners guessing. If you're working on mental math in your class, use these...
Curated OER
Subtraction Tables
With several numbers already filled in, this math worksheet is sure to help your first graders with their subtraction. Three grids prompt learners to finish certain subtraction problems and fill in the answers. A great way to reinforce...
Curated OER
Subtraction Word Problems #1
Practice subtraction skills and word problem strategies with your second graders. After reviewing the example at the top of the page, learners solve 14 word problems involving subtraction. A great way to practice mental math!
Curated OER
Who Has More Money?
Coloring and money combine in this fun instructional activity! First and second graders count the amounts of money represented in each, and then color the person or animal who has the most money. They then draw the correct coins to add...
Curated OER
Inverse Relationships
For this math operation worksheet, 2nd graders fill in 60 boxes in this addition and subtraction inverse operation worksheet. They find combinations that are based on the number 18.
Curated OER
Add or Subtract
In this problem solving activity, learners solve 4 problems in which a story problem is analyzed; there are shapes instead of numbers. Students choose from 2 choices the correct operation which should be used to solve the problem.
Curated OER
Color Tile Riddles
In this color the tile riddles activity, students solve and complete 6 different puzzles that include various riddles to solve. First, they determine the number that is represented by what color according to the information given. Then,...
DK Publishing
Real-Life Word Problems
Prepare your second graders for word problems with a straightforward review worksheet. Use it after a unit on addition and subtraction up to 100, or after you have worked on money math. A sample word problem prompts young learners to...
Curated OER
Rule It Out
Here's a way to create math fact flash cards! Learners create their own cards and sort them into matching categories. Students start with addition and work their way up to harder math such as multiplication, and are asked to notice...
Curated OER
Clock Arithmetic and Cryptography
Students perform basic operations in modular (clock) arithmetic. Students encode and decode messages using shift and affine ciphers. Students apply their multiplication, division, addition, and subtraction skills.
Curated OER
Representing Relationships with Equations
Young scholars explore Cuisenaire Rods. In this pre-algebra lesson, students work with a partner to generate addition problems with the sum of ten using Cuisenaire Rods. Young scholars construct examples of the Commutative Property...
Curated OER
Weaving a Story
It's time to investigate patterns! First and second graders construct a paper weaving using a hundreds chart, then use the Ti-10 calculator to make patterns such as adding 3 each time. Learners remove multiples of three from the hundreds...
For the Teachers
$1 Math
Captivate your class by having them find the value of their names, different zoo animals, musical instruments, etc.,with a mental math lesson. Using the coding formula listed, children learn to fluently estimate and calculate simple sums.
NTTI
Putting Together Ten
Groups explore sets of 10 items in two varieties (i.e. 3 white buttons and 7 black ones, or 5 bears and 5 bunnies). They brainstorm about their objects, write math sentences to represent what they have, and report their discoveries to...