Curated OER
Chapter 19 Review, Section 1: Oxidation-Reduction Reactions
Here is a chemistry activity that was designed for a specific textbook section dealing with oxidation-reduction reactions, but it can be used in conjunction with any general chemistry curriculum. To complete the page, learners must...
Curated OER
Oxidation-Reduction Reactions
Focus on oxidation-reduction reactions with a review worksheet. Junior chemists answer short-answer questions before they write balanced half-reaction and full-reaction equations.
Curated OER
Converting Fractions to Decimals
Help mathematicians convert fractions to decimals and vice versa through these exercise sets. First, they write out nine fractions as decimals. This is really a practice in place value, as all the denominators here are 10. One of them...
Curated OER
Dividing Larger Numbers
As math scholars begin taking on more complex division problems, it's time to cover the different ways to show remainders. Here, they complete eight long-division equations with a fraction remainder and then eight more with a unit...
Curated OER
The Chemistry of Refining Crude Oil
Consider our energy sources: wood, coal, oil, uranium. Learners compare the pollution to energy produced for each. They practice fractional distillation of an alcohol/water mixture to simulate the process of refining crude oil....
Curated OER
Comparing Apples With Apples 1
Elementary schoolers observe and demonstrate how to add and subtract fractions with like denominators. They observe the teacher model a variety of fraction addition and subtraction problems and use fraction strips to complete a worksheet.
Curated OER
Chapter 19 Review, Mixed Review: Oxidation-Reduction Reactions
Here is a short, but well-rounded review of redox reactions. Chemistry apprentices identify the type of reaction, write half-reaction equations, balance equations, and assign oxidation numbers. Being brief, this would make a purposeful...
Curated OER
Dividing by Tens
Are there tricks to dividing by multiples of 10? All of these two-digit divisors are multiples of 10, and every dividend is a three-digit number. Young mathematicians solve the first eight using fraction remainders and the last eight...
Curated OER
What Time Is It? Part 2
Tell time to the half hour with these analog clocks! The first six problems invite first graders to write the correct times below, while the second set of problems provide the time and empty clock faces. A great way to review your time...
Illustrative Mathematics
Origami Stars
This one problem concentrates on the important concept of dividing a whole number by a unit fraction. Here, young mathematicians use pictures they draw to help answer this problem. Insight into the connection between multiplication and...
Curated OER
Cuisenaire Chefs
Favorite family recipes and cuisenaire rods are used to help learners understand fractions. They bring in recipes from home and then use their cuisenaire rods to model the fractional values needed to prepare various dishes. A great way...
Curated OER
Understanding Symmetry Through Visual Art
Have your class explore symmetry, radial balance and fractional parts in natural and man-made objects in their environment. Learners list examples and identify symmetrical and asymmetrical designs. Pupils are given a box of crayons and...
Curated OER
Probability and the U.S. Map
Learners solve and complete 20 different problems that include using a U.S. map and data table. First, they calculate the probability that they will select a state that begins with each letter of the alphabet. Then, everyone completes...
Curated OER
Equivalent Fractions
After you've introduced fractions to your class, have them check out this highly comprehensive slide-show on equivalent fractions. The fractions 1/1, 2/2, 4/4, and 8/8 are shows as fraction bars so that learners will be able to grasp how...
Illustrative Mathematics
Sugar in Six Cans of Soda
Understanding how to multiply a whole number by a fraction is the key concept. Young mathematicians create a visual model of this real-world example and find the solution. Extensions are possible for making this an even richer activity....
Curated OER
Fractions XIV - Multiplication of Fractions
Knowing how to multiply fractions is an important skill. Knowing when you should multiply fractions is equally as important. This impressive presentation covers both topics quite nicely. Along with slides that present explanations, there...
Curated OER
Fractions - Equal or Not
A fabulous lesson on fractions awaits your young mathematicians. In it, learners are invited to explore the world of fractions by accessing websites that have educational activities and worksheets embedded in them. Some excellent,...
Common Core Sheets
Matching Clocks (Half Hour Increments)
First graders read an analog clock and then match it to the corresponding digital clock. Each clock tells time to the nearest 30 minutes.
Common Core Sheets
Creating Clocks (Half Hour Increments)
First graders create clocks by adding hour and minute hands pointing to the given time. All times are to be written in 30-minute intervals.
Curated OER
Adding and Subtracting Fractions
Fifth graders put their fraction knowledge to work by reading word problems and deciding whether to add or subtract the given fractions. Terms such as combined, total, difference, and left indicate which operation to use.
Ohio Department of Education
Fraction Models - Grade Three
Explore fractions using different manipulatives and illustrations. Your class can create a variety of models of fractions and mixed numbers with drawings and manipulatives. They then work to compare fractions, mixed numbers, and whole...
Curated OER
Whole and Half Hours
In this whole and half hours worksheet, learners write the time for the clocks given and draw the hands for the time given. Students complete 9 sets of problems.
Curated OER
A Fraction of the Cost
Students use various coin denominations to explore the concept of fractions. They demonstrate an understanding of the fractions 1/2 ($.50), 1/4 ($.25), 10ths ($.10) and 20ths ($.05) by using fraction circle pieces to create whole units...
Curated OER
Missing Halves
In this halves of objects worksheet, students draw the other half for the leaf, scarecrow, apple, and tree to help them understand symmetry.
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