Learners add numbers and represent digits in extended form. In this extended form lesson plan, students complete this with 2 digit addition problems.

Developing fluency with basic addition and subtraction is fundamental to the success of all young mathematicians. This four-day lesson plan series begins with learners using ten-frames and hundreds charts to recognize patterns when...

Add another strategy to the toolboxes of young mathematicians with this elementary math lesson on using number lines to add and subtract fractions.

How do you know if a number is divisible? Instructors first prove the divisibility rules for three and four and then class members use this modeling to prove given divisibility rules for eight and nine either individually or in...

In this understanding whole numbers worksheet, 4th graders use a computer program for instruction, then answer 16 problems about addition and subtraction.