American Chemical Society
Comparing the Density of an Object to the Density of Water
Investigators construct a makeshift balance and compare equal volumes of wax and water. They do the same for clay and water. Then they discover whether the wax and clay will float or sink in water. Ultimately this is a comparison of...
It's About Time
Conservation of Momentum
Assist your class with understanding collisions as they apply the Law of Conservation of Momentum. Pupils measure the momentum before and after manipulation of two objects so that one strikes another in an inelastic collision. The lesson...
Curated OER
Guided Lesson Explanation for More, less, or Equal
How do you teach kindergartners to count? Use this scripted explanation to show pupils how to solve problems that ask them to determine whether the number of objects in one group is greater than, less than, or equal to the number of...
Curated OER
Word Problems of Equal Share and Equal Groups
Explore this engaging approach to division problem solving with young scholars. They construct story problems after drawing 3 cards that give them a type of object, how many they have of that object, and the number of groups the object...
Cornell University
The Physics of Bridges
Stability is key when building a bridge. Scholars explore the forces acting upon bridges through an analysis of Newton's Laws and Hooke's Law. The activity asks individuals to apply their learning by building a bridge of their own.
Cultures of Dignity
Equity and Equality Lesson
Equality does not equal equity and this lesson explains why. Class members compare two images--one labeled "Equality" and the other "Equity." Using the provided discussion questions, they then develop definitions that distinguish between...
Curated OER
Pumpkin Concentration - Number Dots
This worksheet provides a downloadable template for a seasonal concentration game. Groups of learners match the dots on pumpkin cards. Related printables provide a template for Pumpkin Concentration with number words. Concept could be...
Curated OER
Solve Word Problems of Equal Share
Youngsters solve division word problems. They will make their own division word problems using objects in equal groups. They share how they solved their problem with the class. Division worksheets are included to support the process....
Curated OER
A Mass of Pennies
Learners estimate and determine the number of cents (pennies) that are needed to equal the mass of a variety of common objects. They develop a process for measuring and explore concepts related to units of measurement.
Curated OER
Conditional Probability and Probability of Simultaneous Events
Your statisticians examine the characteristics of conditional probability and the probability of simultaneous independent events. They perform computer activities to find probabilities for simple compound events. They examine the...
Curated OER
All Kinds of Numbers
Count and compare numbers and fractions using "greater than" and "less than." Learners count on by 2s and 10s and represent the end number with base ten blocks, counters, and cups. They use circle stickers to illustrate fractions and...
Curated OER
Word Problems of Equal Share and Equal Groups
Fourth graders solve multiplication word problems. In this multiplication problem solving instructional activity, 4th graders view an example of how to group objects in a word problem. Students practice solving these word problems with...
Curated OER
Equal or Not Equal
Tiny mathematicians count the number of shapes (up to 8) in pairs of object groups and identify the sets as equal or not equal. Five practice problems. They also draw 2 groups of shapes that are not equal. A focused tool that...
Curated OER
Fundamentals of Multiplication
Third graders examine how multiplication is a quicker and neater form of addition and how they can simulate the concept of groups and (sets) to construct the visual effect of multiplication by way of forming groups of (2's) (3's) and (4's).
Inside Mathematics
Quadrilaterals
What figure is formed by connecting the midpoints of the sides of a quadrilateral? The geometry assessment task has class members work through the process of determining the figure inscribed in a quadrilateral. Pupils use geometric...
Curated OER
Weights of Objects
Students differentiate between the weights of an object on different planets. In this geometry lesson, students investigate different weights and graph their results as it relates to the different planets. They appreciate the design of...
Curated OER
Sorting Candy
Lower graders sort and group objects by their different properties. They watch a video about sorting then, sort and organize candy in different groups. Students compare how others sorted their candy. Finally, they decide which group has...
Inside Mathematics
Party
Thirty at the party won't cost any more than twenty-five. The assessment task provides a scenario for the cost of a party where the initial fee covers a given number of guests. The class determines the cost for specific numbers of guests...
Cornell University
Buoyancy
Swimmers know to float by turning their bodies horizontally rather than vertically, but why does that make a difference? In an interesting lesson, scholars explore buoyancy and the properties of air and water. They test cups to see which...
Curated OER
Pumpkin Math
Students discover how to measure the circumference of objects. In this measurement lesson, students use a pumpkin and a tape measure to estimate and find the circumference of the pumpkin.
LABScI
Viscosity: The Fluid Lab
There's more to fluids than meet the eye—they include gases, liquids, and polymers, too! Scholars complete three hands-on activities exploring different properties of fluids. They explore viscosity by measuring the resistance, or...
Curated OER
Naming Fractional Parts of a Whole
Third graders complete a worksheet. In this fractions lesson, 3rd graders review fraction vocabulary, use the SmartBoard to divide fractions and complete stations where they work with fractional parts of a whole.
Creative Educator
Fantastic Fractions
Groups of learners create an animation illustrating fractions using common objects. They choose everyday objects that they can divide into fractions. They take pictures of the objects dividing into fractions and create an animation with...
Curated OER
Exploring Multiplication and Division at a Party
Students solve multiplication and division problems using Unifix cubes. They explore multiplication and division through equal grouping of objects and sharing. Students discuss the task they completed and share how they completed the...