Curated OER
Addition and Subtraction
Students develop their own strategies to solve basic addition and subtraction facts. In this addition and subtraction lesson plan, students use strategies they already know and new ones to solve problems.
Curated OER
Secret Sequences
Students are exposed to different types of sequences. in this sequencing lesson, students learn about simple sequences, multiplication sequences, declining sequences, the Fibonacci sequence and other sequences.
Cold Spring Harbor Laboratory
DNA Words Are Three Letters Long
DNA writes 64 different words but only codes for 20 different amino acids. Budding scientists learn about where each of these numbers come from and why they aren't equal with an online interactive. The resource explains the research, the...
Alabama Learning Exchange
The Causes of Pollution
Learners identify types of pollution. In this environmental lesson, students view a video and discuss the types of pollution. Learners create a poster to suggest ways to prevent pollution.
CK-12 Foundation
Ck 12: Elem Math: Select Correct Conversion for Capacity Operations
[Free Registration/Login may be required to access all resource tools.] A learning module where students must look at two sets of container combinations and decide if the total capacity for each is equal. Uses English units. A video...
CK-12 Foundation
Ck 12: Elem Math: Compare and Write Inequalities Between Products of Decimals
[Free Registration/Login may be required to access all resource tools.] For this learning module, students use number sense to compare the products of two combinations of decimal numbers without calculating and state which product would...
CK-12 Foundation
Ck 12: Elem Math: Comparing the Product of Decimals Without Calculation
[Free Registration/Login may be required to access all resource tools.] For this learning module, students use number sense to compare the products of two combinations of decimal numbers without calculating and state which product would...
CK-12 Foundation
Ck 12: Elem Math: Determining the Greatest Quotient Without Calculation
[Free Registration/Login may be required to access all resource tools.] For this learning module, students use their number sense when looking at different combinations of decimals being divided and, without calculating, state which...
Other
Project Happy Child: Free Addition Worksheets
2000 basic addition worksheets are available at this web site. They can be printed and used for a variety of practice purposes. Some helpful hints are included to avoid mindless practice that could quickly become counter productive.
CK-12 Foundation
Ck 12: Algebra Ii: Addition and Subtraction of Polynomials
[Free Registration/Login may be required to access all resource tools.] Here you'll learn how to add and subtract polynomials, as well as learn about the different parts of a polynomial. Practice problems are also included.
ClassFlow
Class Flow: Close to 20
[Free Registration/Login Required] This flipchart provides additional practice in number relationships and in solving computation and number problems.