Pennsylvania Department of Education
Some Special Sums
Pupils study addition. In this math lesson, students solve doubles and doubles plus one addition facts. Pupils roll dice and use the numbers to create addition problems.
Curated OER
Computers Can Only Add
Students explore using mathematics to solve problems in base two. After a teacher demonstration of using base two to write numbers. students model similar problems to explore the concept of number systems in different bases. To increase...
Curated OER
Number in Statistics
Second graders add two and three digit numbers. They are taught how to calculate the mean and the midpoint. Students are shown how to calculate symmetrical set of numbers. They are shown a model adding the same to each increases the...