Horizontal Addition of 20 to Numbers Between 1 and 20
In this horizontal addition worksheet, students add the number twenty to one-digit and two-digit numbers between one and twenty. Students solve five online interactive problems.
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Ten-Frames – A Games Approach to Number Sense
"How can you help students visualize numbers in a way that is compatible with our base-ten number system?" The answer is simple: use ten-frames. Whether they're being used as a part of classroom routines or as instructional tools, this...
K - 3rd Math CCSS: Adaptable
Recognize Even and Odd Numbers by Forming Partners and Equal Groups
Nobody wants to be the odd man out. The first video in this series uses prior knowledge about making fair teams to teach young mathematicians about even and odd numbers. Pictures and number lines offer support as children learn that even...
6 mins 1st - 3rd Math CCSS: Designed
Solve Addition Problems: Using Complements of 10
In a base ten number system, knowing the complements of ten is a huge help when learning addition with larger numbers. The third video is this series models how these special pairs of numbers can be used along with expanded notation to...
5 mins 2nd - 4th Math CCSS: Designed
Solve Addition Problems: Using Key Vocabulary
Being able to identify key words can make all the difference when solving word problems. The first video in this series on problem solving models how to locate specific words that indicate the solution to a question that involves...
4 mins 2nd - 4th Math CCSS: Designed
Study Jams! Relate Addition & Subtraction
Understanding the inverse relationship between addition and subtraction is essential for developing fluency in young mathematicians. Zoe and RJ explain how three numbers can form fact families that make two addition and two subtraction...
1st - 4th Math CCSS: Adaptable
Study Jams! Addition with Regrouping
Zoe needs to back up her music collection, but do her friends have enough space on their computers to help? Find out as you teach your class how to add two- and three-digit numbers with regrouping. Place value is emphasized as both the...
2nd - 4th Math CCSS: Adaptable