Curated OER
Decimal Fractions
Students use rounding and compensating with whole numbers and explain how to use the empty number line to show additions and subtractions. They round and compensate in relation to decimal subtraction
Background
Illustrative Mathematics
The Lighthouse Problem
Long considered the symbol of safe harbor and steadfast waiting, the lighthouse gets a mathematical treatment. The straightforward question of distance to the horizon is carefully presented, followed by a look into the different...
Curated OER
Angles - Digger and the Gang
Students explore angle estimation and measurement. In this angle lesson, students define obtuse, acute, and right angles, and practice measuring angles using a protractor. Students participate in an online angle estimation activity.
Curated OER
What About Cantaloupes?
Second graders investigate the physical properties of cantaloupe using their senses. In this life science lesson plan, 2nd graders estimate the weight of their sample. They get it's actual weight and compare it with their estimate.
Curated OER
How Far Did They Go?
Students create a map. In this direction and distance instructional activity, students come up with familiar places in the community and calculate the distances from these places to the school. Students create a map that displays these...
CK-12 Foundation
CK-12 Middle School Math Concepts - Grade 6
Twelve chapters cover a multitude of math concepts found in the Common Core standards for sixth grade. Each title provides a brief explanation of what you will find inside the chapter—concepts from which you can click on and learn more...
David Pleacher
Candy Math Fun
Few things can motivate children to learn like the promise of a sweet and tasty treat. Given a bag of M&M®s, Skittles®, or other colorful candy, students first predict the contents of the bag before counting the pieces, creating a...
TRAIN Educational & Community Services
Multicultural Activities
From catching stars developed by African pygmy tribes to chop stix pick-up or the Hanukkah dreidel, use this list of diverse multicultural activities to help your learners draw connections to unique cultures of the world.
Curated OER
Coordinate Grid: Mapping an Archaeological Site
Students examine how archaeologists preserve context of sites through use of rectangular grid or Cartesian coordinate system, and develop sense of distance by pacing off and estimating distances.
Curated OER
Squares and Square Roots
Students find patterns relating the lengths of the sides of squares to their areas. In this squares and square roots lesson, students draw squares and find their areas. They estimate the sides of square when given the area. Students use...
Curated OER
The Estimation Station
Students challenge "common knowledge" against newly learned estimation strategies and put those strategies into use. They consider variables in estimating different groups of objects and practice skills of representing numbers.
Curated OER
Activity #3 Finding Mass
Students use graph paper to construct a graph and determine the slope of a straight line. They determine the weight (mass) of paper clips with a pan balance. Pupils weigh an unknown number of paper clips, and to interpret the graph to...
Curated OER
Worksheet 19
In this math worksheet, students try to fit a line to a set of data. Then they use the least squares method is based on minimizing the sum of the squares of the errors.
Curated OER
Estimation
Students explore the concept of estimation. In this estimation lesson, students discuss making estimates through teacher led discussion. Students use the Internet to complete an activity where they must estimate the length of lines.
Curated OER
Estimation and Computation
Second graders practice their estimation skills using blocks. In this math lesson, 2nd graders explain how estimating makes addition easier. They complete a worksheet after the lesson to reinforce new learning.
Curated OER
Jelly Belly: What a Wonderful "Bean"!
Students explore how jelly beans are produced. They discuss the origins of the jelly bean and view a video about how jelly beans are prepared, tested, shaped, finished, and shipped and estimate the amount of jelly beans in a jar and sort...
Curated OER
Online Interactive Math: Upper Elementary: Mixed Skills
For this online math worksheet, students complete a 20 problem multiple choice online interactive worksheet with mixed skills including geometry, rounding, and three digit multiplication.
Curated OER
Descriptive Writing
Students practice descriptive writing. In this unique writing lesson, students hear a story about a mitten. Then three grade levels come together to first, create a mitten on KidPix; second, describe the designed mitten; and third, try...
Curated OER
Best Guesser
Fifth graders develop strategies for estimating ages, and illustrate results by graphing and interpreting scatter plots to compare x and y coordinates.
Curated OER
Angles: Angles, Angles, Everywhere
Middle schoolers estimate and accurately measure the size of angles communicate with the appropriate geometric terms and symbols to describe and name angles, lines, line segments, rays
Curated OER
Measuring Different Surfaces
Fourth graders investigate measurement of linear and curved surfaces. In this math lesson, 4th graders discuss how to measure curved surfaces and work with a partner to measure various curved surfaces.
Curated OER
Mapping Seamounts in the Gulf of Alaska
Learners describe major topographic features on the Patton Seamount, and interpret two-dimensional topographic data. They create three-dimensional models of landforms from two-dimensional topographic data.
Curated OER
Sports Bag
Students determine an efficient layout of the pattern pieces needed to make a sports bag with given dimensions and specifications. Given a word problem, data set and a diagram, students evaluate the information they have available and...
EngageNY
Sampling Variability in the Sample Mean (part 1)
How accurate is data collected from a sample? Learners answer this question using a simulation to model data collected from a sample population. They analyze the data to understand the variability in the results.