This 1.G.1 Common Core activity has 1st-2nd grade students sort colorful shape cards into houses by their number of sides, with a practice page and answer key included.

This three addend addition activity helps 1st-2nd grade students add three numbers by matching ice cream cones to scoops with the right sum. Answer key included.

The Froggy Odd Even Game lets 2nd graders sort two-digit numbers as even or odd and build even numbers from two equal parts. An answer key makes checking quick and easy.

Practice finding the tens digit with this place value tens worksheet for 2nd grade. Students circle the digit and write its value, and an answer key is included for quick checking.

The Roman Numeral Names Worksheet has 2nd grade students read Roman numerals from II to X and write each number word, with an answer key, to build flexible number sense.

Use this double digit subtraction no regroup worksheet to help 2nd grade students subtract tens and ones in column problems and word problems. An answer key is included for quick checking.

This Valentine's Day Adding Coins Worksheet has 2nd grade students add rows of mixed coins, combine two sets of coins, and solve a story problem. An answer key is included, so every total checks in seconds.

Using the Adding 2 Song (MP3), students sing and practice adding 2 with all addition facts 1-15. Your kids will learn how to add 2.

Using the Adding 3 Song (MP3), students sing and practice adding 3 with all addition facts 1-15. Your kids will learn how to add 3.

Using the Adding 4 Song (MP3), students sing and practice adding 4 with all addition facts 1-15. Your kids will learn how to add 4.

Using the Adding 6 Song (MP3), students sing and practice adding 6 with all addition facts 1-15. Your kids will learn how to add 6.

Using this On the Water Way with Arrays Activity, students match multiplication equations to the picture or array representation.

Using this Measure it Comparing Lengths Activity, students measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.

In this Measure it Measurement Tools Activity, students measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.

Using this Become a Superhero by Comparing Numbers Activity, students compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols.

Using this Let's Make a Bar Graph Activity, students draw a picture graph and a bar graph to represent a data set with up to four categories to solve simple put-together, take-apart, and compare problems using information presented in a bar graph.

Using Pirate Addition to 12 Activity, students match addition equation cards with sum cards to build addition fact fluency skills.

In this 2.G.3 Second Grade Common Core Lesson, students will partition circles and rectangles into two, three, or four equal shares.

In this 2.MD.1 Second Grade Common Core Lesson, students will measure the length of an object by selecting and using appropriate tools.

In this 2.MD.10 Second Grade Common Core Lesson, students draw a picture graph and a bar graph and analyze given graph.