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
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...
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....
American Museum of Natural History
What do You Know About Life on Earth?
Humans have only inhabited the earth for a fraction of the time that life has existed. Young scientists explore the facts about the emergence of life on Earth with an interactive resource. While highlighting different types of life, the...
Curated OER
Exploring Decimals, Percents, and Fractions Using Gizmo
In this fraction, decimal, and percent worksheet, students convert between fractions, decimals, and percents. Students explore numbers presented in these different forms using models and Gizmo.
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
Exploring the Hudson in 1609
In this geography worksheet, 5th graders study about the exploration of the Hudson River. Students respond to 7 multiple choice questions about the presented facts.
Curated OER
NUMB3RS Activity: A Matter of Half-Life and Death
Students investigate exponential decay. Students explore the biological half-life of Cesium-137. Students investigate the Goiania Accident of 1987 which is considered one of the worst incidents in the history of the Atomic Age.
National Institute of Open Schooling
Chemical Kinetics
Not all chemical reactions happen at the same rate because some, like explosions, occur quickly and some, like rusting, occur over time. Here, learners explore chemical reactions and their rates in the 16th lesson of 36. Through readings...
CK-12 Foundation
Equivalent Fractions
An interactive made up of five questions tests scholars' knowledge of equivalent fractions. Two fraction circles with moveable parts assist mathematicians in finding solutions. Questions are multiple-choice with one discussion.
CK-12 Foundation
Addition of Fractions
Five word-problems challenge mathematicians to add fractions. Interactive fraction circles assist scholars in problem-solving. Question types include multiple-choice, true or false, and a discussion.
California Education Partners
Improving Our Schools
Split the work three ways. Learners use their knowledge of fractions to solve problems dealing with splitting up work loads evenly between three groups. Scholars determine the fractional portion of work each group will do along with...
Pie Council
National π Day
Learners can enjoy pi with pie! A collection of short activities celebrates pi day with a word search, a maze, and real-world problemsn. Using pi in formulas for area, circumference, and volume as well as exploring simple fractions is...
CK-12 Foundation
Radiocarbon Dating
How do we know how long ago a dinosaur lived or an ancient fire pit was used? Scholars learn about the application of carbon dating and half lives to discover things about the past. They adjust the amount of radioactive carbon in the...
Exploratorium
Exploring a Complex Space-Filling Shape
Middle schoolers build a three-dimensional 12-pointed star as a geometric exercise. The shape is quite-difficult to construct. Luckily there is an excellent template that learners cut out, then use to make their pyramid. The second part...
CK-12 Foundation
Marie Curie's Classroom
What makes some elements stable and others radioactive? Scholars adjust the number of protons and neutrons in an element then observe its decay. The simulation includes a graphical representation and the chemical formula, as well as...
Cornell University
Fruity Math
Nothing sounds more delicious than fruity math! Young mathematicians solve fraction and multiplication word problems about berries, grapes, and more.
Curated OER
Fractions, Decimals, and Percentages Got You Down? "Tri" This!
Students explore number sense by creating a math presentation in class. In this parts of a whole lesson, students define and discuss the relationship between fractions, decimals and percentages before completing a problem worksheet in...
Curated OER
Dividing by Larger Numbers
How should the remainder be expressed? Scholars explore multiple ways as they solve 15 long division problems, only four of which divide evenly. For the first eight, they write out the remainders as fractions, while the last eight have...
Curated OER
Student Exploration: Summer and Winter
In this recognizing the seasons online/interactive worksheet, students explore the Earth's positions and determine the summer and winter season. Students answer 21 short answer questions
Lesson Snips
Halves, Thirds, and Quarters - Exploring Fractions
Fractions can be difficult to understand. In this introduction to fractions activity, students determine meaning, identify terms, and problem solve fractions. Fraction fiends solve eight problems. An excellent resource!
Ohio Department of Education
Fraction and Decimal Equivalency
Mathematicians make representations of fractional parts of a whole and learn that a decimal is another way to represent a fractional part. Understanding is extended by comparing and ordering fractions and decimals on a number line. This...
Curated OER
What is a Fraction
Students explore fractions and define their parts. They define numerator and the denominator and use an apple to model familiar fractions. Using, mini whiteboards, they draw pictures on their white board to describe a given fraction.
Curated OER
Exploring Data Sets and Statistics in Baseball
Students explore the concept data sets. In this data sets lesson, students find the 5 number summaries for salaries of teachers and compare them with 5 number summaries of professional baseball players. Students use box and whisker...