National Park Service
Rock Ranking
Junior geologists sort rocks and soil. They separate a sample of river gravel by size, shape, color, and other characteristics. To include Common Core standards, you could have little ones graph the number of particles in each sample.
Curated OER
Classifying Objects
Fourth graders work in small groups to sort and classify a variety of objects. They develop criteria for sorting and explain the characteristics they chose for classification. Groups record and share their classifications.
Alabama Learning Exchange
What Is An Inch?
Students identify the length of an inch. In this measurement lesson, students read Inch by Inch and predict how many inches long various objects are. Students practice measuring the objects by using an inch ruler.
Curated OER
Liquid Level
Students observe liquids in different containers and then explore the concept that liquids have level surfaces. They identify those who are not at the center to reinforce the concept of liquid levels with a representational puzzle and...
Curated OER
Separating Soup Mix
Pupils use screens of three sizes to separate a mixture of five solid materials. They plan and conduct simple investigations using appropriate tools, measures, and safety rules and record and report observations, explanations, and...
Curated OER
Addendum to the Written Curriculum: Measuring Solids
Students use standard rulers to measure the length of common classroom items - such as pencils, books, desk tops - in inches and centimeters, and measure weight in pounds. They also answer math questions, such as "How long is the front...