Students explore what a proof is, how and why mathematicians create them and compose essays on how reason and logic are employed in the workplace. They explore whether any three lines can make a triangle and attempt to verify Goldbach's...

In this math and music activity, students add notes to 4 bars of music so that each measure will have 4 beats. There is a chart provided with the notes and values.

Captivate your class by having them find the value of their names, different zoo animals, musical instruments, etc.,with a mental math lesson. Using the coding formula listed, children learn to fluently estimate and calculate...

Second of six lessons in a unit on dissolving, this one focuses on how sugar behaves in different liquids. Learners stir it into water, alcohol, and oil and make observations. This lesson can stand alone, but is best used as part of the...

Young scientists observe the spectra of elements and compare that to the Doppler effect. Hook scholars from the beginning all the way to the extension activities in this 5E-format lesson. 

In this multiply by a two-digit number worksheet, 4th graders multiply mentally twelve equations, calculate the answers to twenty two additional multiplication equations.

Provide second graders with an explanation for how to find the total value of numbers written in a series of boxes.. The resource provides answers and explanations for problems on a referenced worksheet that is not included.

Use this attractive activity to help your class practice basic addition skills. Learners answer six questions in which they add on to an amount shown.

In this fraction addition instructional activity, 5th graders add the whole numbers and then the fractions with like denominators. Students add to solve 16 problems.

For this doubles addition worksheet, students solve 20 problems adding single-digit doubles, determine which doubles add up to given sums and add 10 "near doubles." A website reference for additional resources is provided.

In this addition learning exercise, 3rd graders practice solving 10 addition problems involving 2-digit whole numbers. Students put their answers in the shapes provided.

In this addition practice worksheet, students practice their computation skills as they solve 30 problems that require them to add 1-digit numbers. Each problem has 3 addends.

Second graders develop the skill of place values up to the tens place. They practice identifying the values of 2 digit numbers and writing the correlating values with counting. They use the example of money to make the lesson more...

In this addition worksheet, students solve the 10 subtraction problems and write the answers in the boxes. The problems involve adding a 2-digit number to a 2-digit number. The answers are on the second page.

In this math worksheet, students add two double digit numbers. Carrying (or regrouping) from the ones to the tens column is required on 9 problems. Ten problems have answers greater than one hundred.

In this subtraction worksheet, students find the differences to 53 horizontal and vertical subtraction problems. They work with numbers up to 19 and do not regroup while working.