Curated OER
Investigate Factors Affecting Nitrates in Groundwater
Learners participate in an experiment in which they investigate the factors affecting the levels of nitrates in groundwater. Using examples, they explain the nitrogen cycle and identify the sources of chemical nitrogen fertilizers. ...
Curated OER
Reading Trees: Understanding Dendrochronology
Students examine tree-ring dating and discuss the lack of water the settlers in Jamestown faced. They create paper tree rings, simulate rain patterns, and describe the history of construction paper tree sequences.
Curated OER
Quadratic Equations and Functions
Students factor and solve quadratic equations. In this algebra lesson, students identify the domain and range of the quadratic function. They graph the parabola and identify the vertex.
Curated OER
Transistor Hunt
Learners locate transistor devices in school. They explain the importance of transistors.
Curated OER
Relating Fractions, Decimals, and Percents
Fifth graders participate in a instructional activity that is concerned with the concept of telling the differences between a fraction, decimal, and percent. There is a good example of conversion in the instructional activity.
Curated OER
Theory of Codes
Students explore the concept of code theory. In this code theory instructional activity, students discuss noise, error correction, Hamming distance, parity check matrices, and cyclic codes. Students develop these concepts through...