Counting and cardinality are key to building basic number sense in young mathematicians. Beginning with writing numbers to 10, the collection is organized so that each resource directly relates to, or builds upon, the previous one. Learners are able to count and write numbers all the way to 120 before learning how to skip count by 2s, 3s, 5s, and 10s. These skills all help build basic number sense in order to add and subtract. The collection includes helpful math tools, such as ten frames, hundred charts, and dot cards, that prove valuable in reinforcing these skills.

Go back to the basics with polynomials and show your students that similar rules with adding, subtracting, multiplication, and division still apply. While some things are different (um...FOILing) learners should still remember the basic steps they are comfortable with!

Check out the Common Core with a collection that represents all the 8th grade math standards. Most resources engage multiple standards but the main one is listed on the notes section of each tab. 

This collection has a resource for each standard in the Number and Quantity selection of the CCSS. While several of the resources cover multiple standards, the focus standard is listed in the notes section of each resource for easy viewing.

Students may dread the fraction, but don't let them dread the rational function. Here are some lessons, videos, and worksheets to help learners practice and comprehend the idea of rational functions, and see that they already know about some of the basics of fractions. 

One of the foundations of Algebra is the understanding of expressions and their parts. This collection focuses on the different types of expressions and while some are specific to one type of function, others blend the general idea of expressions in the resource.

Once expressions are understood, students can manipulate them to their advantage to help them solve various problems. The main focus of this collection is quadratic expressions, exponential properties, and geometric series.