Illustrative Mathematics
Comparing Products
How can 5th graders show understanding that 30 x 225 is half of 60 x 225 without completing the computation? They can use an area model and draw it out. An array, or an open array, is an area model that allows for young learners to...
Curated OER
Smiling at Two Digit Multiplication!
How do I solve a two-digit multiplication problem? Your class tackles this question by walking through problem solving methods. They first investigates and applies traditional multiplication methods, and they then compare those with...
PBS
Adding Integers
Your sixth and seventh graders deepen their understanding of a number line and adding integers in this concrete, hands-on activity. Learners play "Warehouse Puzzle" and then discuss their game strategies and the characteristics...
Education Development Center
Adding Fractions with Unlike Denominators
If the fractions don't have a common denominator, make them have one. Learners first read and analyze a conversation of pupils trying to add 2/5 and 1/2. They compare the process of adding fractions to the process of adding quantities...
EngageNY
Markup and Markdown Problems
There is a 100 percent chance this resource will help pupils connect percents to financial literacy. Young mathematicians use their knowledge of percents to find markups and markdowns in financial situations in the seventh segment in a...
PBS
Add, Subtract and Multiply Fractions
Your future chefs will appreciate this comprehensive lesson where learners practice operations on fractions using pizza and soup analogies. Learners begin with a pizza analogy that requires the learners to multiply a whole number by a...
Illustrative Mathematics
To Multiply or not to multiply?
When do you multiply a fraction by a fraction? Here, fifth graders are given 10 different word problems and asked to decide if multiplying 2/5 x 1/8 is appropriate. Many times, real-world word problems sound similar although the required...
Curated OER
Incredible Integers!
There are three parts to this instructional activity on integers. In the first, learners explore positive and negative numbers on an actual painter's tape number line and by playing a "Hot Seat" game. In part two, they view a BrainPop...
Shodor Education Foundation
Pythagorean Theorem
Most adults remember learning about the Pythagorean theorem, but they don't all remember how to use it. The emphasis here is on developing an intuitive understanding of how and when to use the theorem. Young mathematicians explore...
Illustrative Mathematics
Grass Seedlings
Plants never grow at the same rate, and that is the antithesis for this word problem involving multiplication of fractions. On the instructional activity, Raul notices that Pablo's seedlings are 1 1/2 times as tall, and Celina's...
Curated OER
Exploring Equivalent Fractions
An extensive activity explores equivalent fractions and is intended for three 60-minute periods. Young mathematicians compare and order fractions with like and unlike denominators. Included are worksheets, assessments, and answer sheets;...
Curated OER
Inferring Character Traits
Here is a lesson which is "flexible," and can operate as an individual or whole class activity. After reading a book of their choosing, with the use of a semantic map, learners identify character traits. They infer how their feelings...
Curated OER
Know the Phone in an Emergency
Third graders list important phone numbers to call in emergency situations, identify when to call each number, and practice dialing numbers on toy telephones.
Curated OER
Decimals in the Dugout
Students investigate place value and decimals during baseball related activities. In this place value lesson, students explore place value with decimals. Resources are included.
Curated OER
Two-Step Problems and Money Concepts
Elementary schoolers solve two-step equations and practice money concepts. They solve multi-step addition and subtraction contextual problems and apply money concepts to real life situations. Pupils use pictures and counters to help them...
Laboratory for Atmospheric and Space Physics
Where Are We Going?
Come take a ride on the space bus! Scholars go on an imaginary trip to pick up their peers from the inner and outer planets while reinforcing math skills. First, learners round decimals to identify each planets' distance from Earth....
NOAA
Biological Oceanographic Investigations – Keep Away
As of 2015, there are 53,481 oil wells in the Gulf of Mexico. Scholars determine how species diversity is impacted based on the ecosystem's distance from a drilling platform. It focuses on finding the mean of data sets and creating bar...
Curated OER
Comparing Fractions
Students discuss the nature of fractions and compare fractions based on a similar whole to determine relative size.
Curated OER
Spill the Beans
Students explore the meaning of a fact family. In this Math lesson, students work in small groups to create their own fact family based on color of beans. The beans are colored and represent a given value. Students discover the meaning...
Curated OER
Grade 3: Pretzel Probability
Third graders discuss prizes included in products to stimulate sales. They discuss a pretend pretzel company and it's sticker promotion. Students compute how many boxes of pretzels they will need to collect in order to be sure of having...
Curated OER
La Presencia Escondida: Spanish Speakers in Our Community
Students effectively operate a digital camera and conduct basic interviews with Spanish speaking people in Spanish. They conduct in-depth interviews with interviewees in English, if possible, and transcribe all or portions of the...
Curated OER
"The Grapes of Math" by Gregg Tang
Pupils practice mental addition and use the associative and commutative properties of addition to solve problems.
Curated OER
Lu-Lu
First graders practice their counting skills while playing a Hawaiian game called Lu-Lu. Lu-Lu is a Hawaiian counting game. It is played with four stones. Each stone is divided into four equal sections and dots are placed in the...
Curated OER
Proportional Representation: A Fairer Voting System?
Tenth graders work as a grade to conduct a mock election. They tally votes in two different systems and discuss if proportional representation or straight counting of votes leads to a fairer outcome.