Curated OER
Finding the Percent of Iron in Lawnsand
In this percent of iron in lawnsand instructional activity, students perform a titration of lawnsand using potassium manganate (VII) solution and find the number of moles of iron in the sample. Students use the number of moles to find...
Curated OER
Teaching Radioactive Decay: Radioactive Half-life And Dating Techniques
Learners generate a radioactive decay table for an imaginary element using a box filled with pinto beans and M&M's. They use their data to plot a decay graph, develop the concept of half-life, and use the graph to "age" several samples.
Curated OER
Initial Fraction Ideas Lesson 10: Overview
Third graders use strips of paper to find equivalent fractions. They will fold paper into thirds and shade 2/3 of the paper. Then fold the same paper in six parts and predict how many parts will be shaded. They will repeat again folding...
Illustrative Mathematics
Banana Pudding
Making banana pudding despite misplacing your one-cup measuring cup is easy as long as you can find your quarter-cup measuring cup!Ā This real-life activity provides a good opportunity for learners to interpret division of a whole number...
Curated OER
2000 U.S. National Chemistry Olympiad National Exam - Part I
The National Chemistry Olympiad exams are comprehensive tests covering an entire Ā year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...
Illustrative Mathematics
Finding the Line of Symmetry
Can you find the line of symmetry? That's what your students will demonstrate by completing this worksheet. The task gets increasingly difficult as shapes are included that have one line of symmetry, no lines of symmetry, and multiple...
Curated OER
Linear Inequalities in One and Two Variables: Rays and Half Planes
Define rays and half planes, including the concepts of boundary lines and prerequisite knowledge of coordinate planes. Given linear inequalities in one and two variables, your class will compare the differences. They will also graph...
Curated OER
"Pizza"rama With Fractions!!
Young mathematicians explore number values by utilizing food as a visual aide. They discuss the differences between halves, fourths, and eighths and how they are visually represented by a pizza. Then create their own pizza in class and...
Common Core Sheets
Finding Percent of Fractions
Sixth graders read word problems that involve finding the percent of an item, given the fraction.Ā
American Museum of Natural History
Finding Fossils
How does one go about finding fossils? Find out with an informative webpage that looks at the digging process, showcases rocks and common fossils, helpful tips, and a list of archeological do's and don'ts.Ā
Curated OER
Finding a Half on a Number Line
In this 1/2 instructional activity, students fill in missing numbers on a number line, finding halves. A reference web site is given for additional activities.
Curated OER
Fraction XII: Subtracting Unlike Denominators
This fractions PowerPoint defines and gives examples of multiples and least common multiple, then models how to list multiples and circle the least common multiple. Each step to use in subtracting fractions with unlike denominators is...
Curated OER
Fraction of a Number
Whether you need a math drill or a comprehensive review, here is a great addition to any math lesson. After reviewing how to find fractions of whole numbers, pupils work on problems, such as 1/8 of 72 and 1/2 of 114. Use this activity as...
Curated OER
Locating Fractions Greater than One on the Number Line
Supplement your lesson on improper fractions with this simple resource. Working on number lines labeled with whole numbers between 0 and 5, young mathematicians represent basic improper fractions with halves and thirds. The fractions...
Curated OER
Line of Symmetry
Where is the line of symmetry in these shapes? Review this concept using the visual guide at the top of the page, explaining how some shapes have multiples lines. Consider demonstrating this concept with large cut-outs, physically...
Curated OER
Number Wall
Use the number wall to practice addition, evens and odds, missing addends, and doubling. Learners answer various questions based on six numbers, filling in squares with digits. They list the odd numbers and total them, then list the even...
Curated OER
Which is Closer to 1?
A seemingly simple question that reveals a lot about a student's understanding of fractions. In finding an answer, learners compare fractions with different denominators that are both greater and less than one. No number line is...
Mathed Up!
Fractions of an Amount
After viewing a video on fractional amounts, young mathematicians put their new knowledge to the test. Throughout the assessment, class members find the fractional amount for prices, times, and populations. There are a few percent and...
Illustrative Mathematics
Find 1/4 Starting from 1, Assessment Version
Where does a quarter go? Given a number line, the short task asks individuals to place the number one-fourth correctly upon it. The writers developed the task to demonstrate ways to assess critical skills from the CCSS.
Curated OER
Find Missing Fraction Worksheet
In this fractions worksheet, learners analyze the positive and negative fractions on eight number lines. Students name the two missing fractions on each number line.
Curated OER
Which Fraction is Bigger or Smaller?
Compare fractions with common numerators! Pupils look at fractions with different denominators and the same numerator to find which one is bigger. They look at hands-on manipulations of fractions to understand the concept of why one is...
Curriculum Corner
Fraction Brochures
Make fractions fun and interesting by using a brochure form. Young mathematicians practice and gain a better understanding of how to add and subtract fractions, simplify fractions, and find LCD (least common denominator). The resources...
Illustrative Mathematics
Half of a Recipe
Kids love to cook! What is a better place to learn mixed numbers than with a recipe? It is up to learners to decide how they want to divide this recipe in half. They may choose to model the mixed number and then divide the model by two....
Curated OER
Finding Common Denominators to Subtract
Subtracting fractions with unlike denominators can be overwhelming, but in this task, 5th graders work systematically to break down the procedure through three questions. The first two questions askĀ for pictures to be drawn along with...