Curated OER
Number: Decimals
Students explore the concept of decimals. For this decimals lesson, students examine number patterns as they complete a worksheet that requires them perform multiplication with decimal numbers.
American Statistical Association
Happy Birthday to . . . Two?
How many people do you need in a room before two likely share the same birthday? Scholars consider this puzzle by analyzing a set of data. They ponder how to divide the data and determine the proper size of a group for this event to...
Curated OER
Mental Addition and Subtraction
Students play the online game ArithmAttack to practice mental math skills. They play the game to as many additions or subtractions as possible in sixty seconds. Afterward, they complete a paper based follow up exercise.
Curated OER
Rooster's Off To See the World Number-Sense
Students recognize how numbers are used in number stories. In this Rooster's Off To See the World lesson, students participate in the story. Students complete a number activity and work on the computer to illustrate a number...
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...
Curated OER
Meba Math (K-1)
Students work with counters and math mats to demonstrate number concepts. In this number concept lesson, students use cubes and configuration cards to show more or less than given numbers.
Curated OER
Count on Math
Students develop number sense up to a million. In this developing number sense up to a million lesson, students count their breaths in given time span. Students use blocks representing 10's and 100's to create a...
Curated OER
Using Negative Numbers
Fourth graders explore negative numbers with this resource. They discuss positive and negative numbers by counting who is present and absent, placing numbers on a number line, and graphing temperatures. Using a variety of activities,...
Curated OER
Number Base Clocks
Students investigate place value in base ten. In this number sense lesson, students participate in an online lesson at www.shodor.org/interactivate/activities/NumberBaseClocks and demonstrate how to convert numbers from base ten to other...
Illustrative Mathematics
A Bobbie Bear's Buttons
Young mathematicians help Bobbie Bear pick colored buttons out of a box as they learn how to decompose numbers less than 10 into pairs of smaller numbers. To support learners with the process, consider creating a worksheet or graphic...
Statistics Education Web
I Always Feel Like Somebody's Watching Me
Future statisticians and potential psychics first conduct an experiment to collect data on whether a person can tell if someone is staring at them. Statistical methods, such as hypothesis testing, chi-square tests, binomial tests, and...
University of Minnesota
Fraction Operations and Initial Decimal Ideas
Add another strategy to the toolboxes of young mathematicians with this elementary math lesson on using number lines to add and subtract fractions.
Curated OER
Dinosaur Math
Second graders practice vocabulary related to measurement, mathematics, and dinosaurs. Using the engaging topic of dinosaurs, learners will calculate various information about dinosaurs and use measurement vocabulary. They will also...
Curated OER
Find 1
Extend your class's ability to represent unit fractions on a number line with this challenging worksheet. Given two number lines, one labeled with zero and 1/4, the other with zero and 5/3, learners must accurately locate the number one...
Curated OER
K-1 Numeral Recognition
Young scholars investigate numerals by creating visual aides. In this number sense lesson, students discuss the different types of numerals and how they can be translated into a number or an image. Young scholars create a...
Curated OER
Number Recognition Games
Students explore number sense by participating in a math recognition activity. In this number identification lesson, students practice pronouncing names of numbers and matching the number with an amount of objects. Students practice...
Curated OER
How Much is a Million?
Students discover the magnitude of the number 100. The sense of the number is developed by allowing students to experience 100 by counting it, measuring it, feeling it, and doing it, hands-on
MARS - Mathematics Assessment Resource Service
Applying Properties of Exponents
The properties of exponents are all linked together and it is your mathematicians' job to discover and apply those rules. The comprehensive lesson begins with a pre-assessment task to check for prior knowledge and then goes into a...
Curated OER
Place Value and Rounding
Use rounding mountains and number lines to learn how to round numbers and learn place value. Learners will use a worksheet to help them round numbers. They will play a game called "Place Value Match-up" to help with skill practice. All...
Mathematics Assessment Project
Generalizing Patterns: The Difference of Two Squares
After completing an assessment task where they express numbers as the difference of squares (i.e., 9 = 5^2 – 4^2), class members note any patterns that they see in the problems.
Curated OER
Soak It Up
Young scholars role play where they assume the role of business executives who must decide which of three prototypes of paper towels would be the best buy for consumers. Students compare three products to determine the best value by...
Virginia Department of Education
Ordering Fractions, Decimals, and Percents
Order up a resource on comparing rational numbers. Scholars order fractions, decimals, and percents by converting to a single form. They conduct a cut-and-paste activity ordering three sets of rational numbers.
Illustrative Mathematics
Listing Fractions in Increasing Size
Increase the depth of your class's fractional number sense with this number-ordering activity. Given four fractions, each with different numerators and denominators, young learners are asked to place them in order from smallest to...
Curated OER
Playing with Fractions: Wipe-Out
Learners explore fractions by participating in a class math game. In this number sense lesson plan, students identify the numerator and denominator of different fractions while comparing their values. Learners read the rules for the...