Use the Law of Cosines and the Law of Sines to solve problems using the sums of vectors. Pupils work on several different types of real-world problems that can be modeled using triangles with three known measurements. In the process,...

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

Unlock the keys to fluent multiplication with this upper-elementary math lesson. After an introduction to the five properties of multiplication, young scholars match cards with different math problems to posters describing each...

Hands-on investigation of Riemann sums becomes possible without intensive arithmetic gymnastics with this interactive lesson plan. Learners manipulate online graphing tools to develop and test theories about right, left, and...

Your learners use many different number representations like positive and negative integers, exponents, radicals, and combinations of operations as they learn and strengthen their use of the order of operations. Thoughtfully organized to...

Challenge the addition skills of young learners with this open-ended math problem. The task is simple, get from start to finish by connecting a series of three numbers. The trick is that the sum of the numbers must be less than...

An addition table supports third graders as they learn strategies to improve their math fluency. When finding sums greater than ten, students are taught how to first make a ten and then add on the rest. A similar method is also...

Groups explore sets of 10 items in two varieties (i.e. 3 white buttons and 7 black ones, or 5 bears and 5 bunnies). They brainstorm about their objects, write math sentences to represent what they have, and report their discoveries...

Here is a straight-forward problem of multiplying two binomials with a twist. It is up to algebra learners to decide how to turn this product of sums into a sum of products. However, it is not the quadratic that is the answer; it is the...

Investigate the volume of cones and cylinders. Scholars develop formulas for the volume of cones and cylinders in the 10th lesson of the module. They then use their formulas to calculate volume.

Students find the sum of the angles of a polygon and construct a polygon given the number of sides. In this polygon lesson plan, students draw large polygons on the floor of the room. They measure the length of each side and the interior...

Use a kinesthetic activity to elucidate ordered pairs and coordinate planes. Arrange desks in a square array and distribute to learners cards with ordered pairs based on the locations of their seats. By having various groups of...

Learners work through ten transactions that will help them understand credits and debts on a global scale. They then discuss each transaction in terms of the global economy. An extension activity and discussion questions are included.

In this signed numbers worksheet, students simplify equations by using the indicated operation. They add, subtract, multiply, and divide equations containing two to four positive and negative integers. Three of the 25 equations contain...

In this signed number worksheet, learners find the sum and difference of positive and negative integers. They use the order of operations to solve equations containing exponents and parenthesis. Students complete 26 problems.

In this signed numbers worksheet, 8th graders simplify integer problems through addition, multiplication, division, or subtraction. The majority of the 26 problems contain a minimum of 3 integers, and some more. Four problems contain...

What does it take to show two triangles are similar? The 11th segment in a series of 16 introduces the AA Criterion for Similarity. A discussion provides an informal proof of the theorem. Exercises and problems require scholars to apply...

Young scholars participate in a instructional activity that investigates Newton's Second Law of Motion. They conduct an experiment of observing balls that are rolled down a ramp. The instructional activity includes background information...

Create a class of mathematics master. They practice addition to ten until they have mastered the skill. They use their hands to add numbers and eventually find the missing addend to make a sum of 10. They also subtract a single digit...

Second graders use black and red construction paper to symbolize different one digit numbers that add up to 10. In this sums to 10 lesson plan, 2nd graders discover different combinations and patterns that can lead them to the number 10.

Something for young mathematicians to remember: the sum of any two sides must be greater than the third. Class members investigates the Triangle Inequality Theorem to find the relationship between the sides of a triangle. At the...

Lead the class in a Greek history lesson with a geometric twist. Pupils relate a short video about geometric properties to modern-day methods of solving for unknown angles. They discuss parallel line theorems and complete...

Take a spin to determine experimental probability. Small groups spin a spinner and keep track of the sums of the spins and calculate the resulting probabilities. Pupils use simulated frequencies to practice finding other probabilities to...

And they're off! Working in pairs, young mathematicians roll dice to see who can fill in their double ten-frames first. When students finally fill in their arrays, they create addition number sentences that represent their rolls, helping...