Curated OER
Number Line Math
Second graders use a number line to practice subtraction. For this subtraction lesson, 2nd graders use a number line to count backwards. Students participate in mad math activities and solve problems.
Curated OER
Menu Mania
Learners explore the concept of estimating by watching a video, and discussing the strategies for estimation. They estimate the costs for various menu items, then calculate the exact amount spent.
Curated OER
Pocket Change
Students explore algebraic relationships using the coins in their "pocket." Interactive games that demonstrate the use of estimation in algebraic problem solving help them build a framework for understanding word problems in a way that...
Curated OER
Research Cruise Word Problems
Learners examine life aboard the NOAA research vessel, Ronald H. Brown. They complete word problems related to the vessel, and then create three problems of their own.
Curated OER
Estimating Fish Populations
Students describe the mark/recapture method used to estimate fish populations. They explain the importance of being able to predict population numbers.
Curated OER
Which Pair?
Students practice solving equations adding decimals and integers. Using a worksheet, they identify which pair of numbers goes correctly with the problem. They review their answers and are graded based a rubric given to them.
Curated OER
Beetle Wheels
Second graders link the development of skip-counting patterns to bars on a relationship graph. They also plot our skip-counting patterns on a hundred's board, counting by 2's and also by 4's.
Curated OER
Ws and Worms
Students explore problem solving strategies. Given real life problems, students examine the sum of consecutive strings of whole numbers. Students use diagrams and sequencing to solve problems. Students justify their mathematical...
Curated OER
V-Numbers
Students explore problem solving strategies. Gin a novel situation, students develop a mathematical theory. Through models and mathematics, students justify their solution. Students definea V-sets and discuss conjectures about each set.
Curated OER
Does the falling tree make a sound if no one if there to hear it? (or communication via encryption)
Students explore encryption. They discuss the importance of cryptography in our daily lives. Students use games and cryptography to discover transformational geometry and modulo systems. They design their own encryption puzzles and...
Curated OER
Addition Review
Students explore the concept of addition as used in the subject of Algebra while reviewing the different methods using a number line. The lesson includes examples for students to use for scaffolding for group work or whole class...
Curated OER
More Problems in Context: Linear Models
Six application problems help students to master their knowledge of linear models. Each problem is cited with the original publication source. These questions could be a good class activity, homework assignment, or incorporated into a quiz.
Curated OER
Addition and Subtraction of Decimals
In these decimal skills worksheets, students solve the equations and word problems using addition or subtraction. Students then solve the decimal equations and word problems using addition or subtraction.
Pennsylvania Department of Education
Expressions Involving Variables
Sixth graders practice translating verbal expressions into algebraic expressions. In this introductory algebra lesson, 6th graders practice writing written/verbal sentences into algebraic expressions and vice versa. Students also review...
Pennsylvania Department of Education
Using Expressions and Equations
Sixth graders analyze expressions and equations. In this algebra instructional activity, 6th graders write algebraic sentences and solve for an unknown in a one-step equation. This instructional activity uses the formulas for the...
Curated OER
The Freeman School: Building Prairie Communities
Students examine this one-room school in Nebraska and consider the important role it played in the community during the late 19th and early 20th centuries. They compare their educational experience with those of rural students of...
Curated OER
Impossible Graphs
Students distinguish between possible and impossible graphs of functions, and to learn why some graphs are impossible. They have practiced plotting functions on the Cartesian coordinate plane
Curated OER
Stem-and-Leaf Plots
Students are introduced to stem-and-leaf plots and calculating the mean, median, and mode from the plots.
Curated OER
Measuring a Mummy Case
Young scholars calculate the size of a mummy case and its contents using ancient Egyptian measurements.
Curated OER
Alternative Alphabet
Students determine and compare hieroglyph content and frequency to an alternative alphabet based on symbols that mimic sounds of the alphabet.
Curated OER
Alternative Alphabet
Learners determine and compare hieroglyph content and frequency to sentences constructed in an alternative alphabet based on symbols that mimic sounds of the alphabet. They decide which images are hieroglyphs and which ones are not.
Curated OER
Measuring a Mummy Case
Students practice how to calculate volume using mummy cases. They measure using ancient Egyptian, U.S., and metric systems. They explore how to convert measurements into different systems, and discuss ratios.
Curated OER
A Matter of Proportion
Students measure the relative heights of the mosaic giraffe and its trainer and compare their proportions to an actual giraffe and zoo trainer.