What percentage of Earth is water? How much money does that water bottle cost? What's your email? Answering these questions can require the use of symbols. Help your child navigate the many keys on a keyboard, practice using the shift key, and integrate symbols into their writing with these typing symbols games.

Multiplication is essentially repeated addition, or growing numbers by doubling, tripling, quadrupling, and so on. This unit presents mental models and strategies that help students learn and review the concept of multiplication. Students explore multiplication using arrays, partial products, doubling methods and the standard algorithm to solve numerical and word problems. Students will multiply whole numbers and simple decimals by base ten exponents (i.e. .3 x 103).

This year, second graders will be introduced to the concept of multiplication using repeated addition. For example, they will learn that 5+5+5+5+5 is the same thing as saying 5x5. This guided lesson will use manipulatives to teach kids about repeated addition and give them plenty of opportunities to practice addition within 100. Download and print the accompanying worksheets for even more addition practice.

When students learn the patterns and structures of words they become word wizards! They are able to more fluently convert a word from one part of speech to another, adjust the meaning, or translate a word from singular to plural (or vice versa). In this set of activities students will build on their knowledge of word structure and practice adding prefixes and suffixes, changing tenses and using contractions.

Subtraction fluency within 20 is the focus of this guided lesson for second graders. Kids will be tasked with mental subtraction, as well as with using manipulatives and drawings to add and subtract larger numbers. Word problems will help to round out the lesson, as kids follow the step-by-step method of solving subtraction word problems. For even more practice in this skill, check out our subtraction worksheets.