Curated OER
Maya Math: Addition and Subtraction
Students examine how ancient Maya counted, and practice addition and subtraction using Maya number glyphs.
Curated OER
Fractions, Decimals, and Percents
Sixth graders engage in a activity that explores the conversion process of fractions, decimals, and percents in relationship to their values to each other. Students demonstrate how to convert numbers interchangeably between fractions,...
Curated OER
Working With Place Value
Students investigate the proper way to write numbers using decimals and commas. In this algebra lesson, students recognize the place value of a specific digit. They place numbers correctly on a number line.
Curated OER
Measuring Elapsed Time
Fifth graders convert units within the same measurement system and be able to determine elapsed time. They are given a start time and an end time of a game. Students determine the amount of elapsed time from the data that is given.
Curated OER
Water Quality And pH
Learners determine the pH level of water and its effect on aquatic plants and brine shrimp eggs. This is a three part activity that leads the student through the development of an understanding of water pH. They form a hypothesis and are...