Curated OER
Trina's Triangles
Practice evaluating polynomial expressions at the same time you find Pythagorean Triples. Look for patterns and find examples when the "formula" does and doesn't work. Finally, verify the formula by proving the identity true.
Lesson Snips
Multiplying and Dividing Fractions
Multiplying and dividing fractions can be simple! Help your students access these skills using this fractions worksheet, where they will first learn the steps by reading short informational text. The instructions are good, however the...
Curated OER
Writing Variable Expressions for Physical Models
Explore the concept of writing variable expressions by examining the similarities between expressions with numbers and expressions with variables. Emerging mathematicians determine rules for sequences and patterns before writing a rule...
Curated OER
Multiple Ways to Add and Subtract
Third graders recall multiplication facts to tens. They recall factors of numbers generated by multiplication facts to ten. Students become familiar with the use of brackets in notation. They multiply two digit numbers by a single...
Curated OER
Factoring Quadratic Expressions
In this Algebra II worksheet, 11th graders factor quadratic expressions. The two page worksheet contains explanation of topic, worked examples, and three practice problems. Answers are not included.
Curated OER
Simplifying Fractions
In this algebra worksheet, students simplify fractions using common denominators. They solve using addition and subtraction. There are 6 questions with an answer key.
Kenan Fellows
A Farmer’s Challenge to Breed to the Greatest of Grapes
What does your class know about GMOs? Are they savvy to selective breeding? Challenge young minds to engineer the greatest crop of all time using a hands-on genetics unit. Learners discover the good and bad details of selective breeding,...
Howard Hughes Medical Institute
What van Leeuwenhoek Saw
When van Leeuwenhoek saw cells and single-celled organisms for the first time, he knew these small things were a big deal! Share his discoveries with young learners through a narrated video, model-building activity, and scale study....
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
Number Line Mathematics
Students translate problem situations into diagrams, models, and numerals using whole numbers, fractions, mixed numbers, decimals, and percents. They identify that numbers in different forms are equivalent or not equivalent using whole...
Courseware Solutions
Understanding Algebraic Expressions
Prealgebra apprentices read seven phrases and write an expression for each. The printable version of the activity is not very attractive; it has the standards information printed at the top. The problems are arranged in a table and are...
Curated OER
Fractions Everyday
Students investigate fractions through interactive videos and hands-on activities and class made models.
Curated OER
Basic Multiplication Facts - MathKeys Software
Students explore multiplication concepts. In this multiplication lesson, students define "array" and draw several arrays to represent multiplication number sentences. Students construct arrays on the computer using MathKeys software.
Curated OER
Measurement
Students explore the concept of measurement. In this measurement instructional activity, students discuss what specific measurement tools such as an odometer measure. Students recite a measurement poem. Students make a foldable with...
Curated OER
Prairie In A Bottle
Second graders observe images of prairie ecosystems and discuss the needs of living things. They create a prairie habitat in a closed jar to observe the water cycle and plant growth.
Curated OER
Arranging Chairs (Arrays)
The creation of arrays is the focus of this mathematics lesson. Pupils consider a situation for a theater stage performance: different amounts of people are coming to the show, and they must arrange the seats in rows of equal numbers. A...
Curated OER
Matrix Operations
Here is a worksheet to practice or review basic matrix operations of addition, subtraction, and scalar multiplication. First, define and discuss key vocabulary terms, then have individuals work five simple problems. There are detailed...
Curated OER
Multiplying Mixed Numbers
in this math activity, students combine the factors of mixed numbers in order to get the correct products. The answers are also accessible.
Curated OER
Using Computers for Statistical Analysis of Weather
Students use temperature, cloud cover and other weather data from the S'COOL website to statistically analyze weather around the country. They use computers to calculate and graph standard deviations, means and modes of the weather...
Curated OER
Decomposing Artifacts
Seventh graders participate in an experiment in which they calculate the time of decomposition of different materials. In groups, they fill bags with different materials and cover them in soil. After six months, they create a line graph...
Curated OER
Equivalent Fractions
Learners investigate the process to work problems that involve equivalent fractions. They practice finding the equivalent values of fractions listed on the worksheet. The lesson includes example steps and problems for the teacher to use.
Curated OER
Quadratic Equations
In this algebra instructional activity, students solve quadratic functions through factoring and graphing. They solve for the area of a rectangular area. There are 20 questions.
Curated OER
Simplifying Fractions on the TI-73
In this simplifying fractions on the Ti-73 worksheet, students simplify 8 fractions in short answer format. Students use the Ti-73 to simplify fractions. Students represent the fraction as a picture of shaded and non-shaded squares.
Curated OER
Cross Canceling with Frank and Fred Frog!
In this multiplying and dividing fractions to solve a riddle worksheet, students use cross canceling to solve the problems. Students solve ten problems.