Curated OER
Addition and Subtraction Practice
In this addition and subtraction worksheet, students solve 5 problems set up in horizontal form, then solve 5 word problems. All problems add or subtract using 4 digit numbers.
abcteach
Abcteach: Inventors and Inventions
[Free Registration/Login Required] Find several scientific inventors and inventions with activities for students in primary grades through middle school. One lesson in particular integrates technology by focusing on the invention of the...