Sometimes dealing with decimals is so much easier than dealing with fractions. The ninth lesson in a 21-part module has the class consider situations when it might be easier to add or subtract fractions by first converting to...

In this rounding whole numbers and estimating sums and differences worksheet, students problem solve and calculate the answers to forty two mathematical equations.

In this math worksheet, learners learn to estimate sums and differences by completing step by step exercises. There is one word problem which is the example, and then students can choose from other estimation activities to do with a...

Young scholars estimate, solve, and check a series of addition and subtraction number and word problems. They write their estimates on a recording sheet, compute and write the answer in the next column, and check their answer with a...

Data starts to tell a story when it takes shape. Learners describe skewed and symmetric data. They then use the graphs to estimate mean and standard deviation. 

Profit always seems to get everyone's attention. The same is true during a lesson on estimation. Learners use given information to estimate the cost of supplies for a painting job. They then develop a strategy for estimating the...

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...

Common Core is all about getting your learners to open their minds and think about the why and how. This problem has them thinking about unknown numbers and their relationship with one another when we round and...

Develop young mathematicians' ability to compare fractions with investigation into the number 1/2. After brainstorming a list of fractions equivalent to 1/2, children identify a pattern in the numerators and...

Help pupils explore estimation. They will make estimates and discuss when you might use an estimate. Then they discuss if their estimates are reasonable.

First graders practice rounding 4 digit numbers using place value concepts. In this estimating sums and differences lesson, 1st graders explore clustering, rounding, and front end estimation as methods for rounding decimals.

Pupils use mental math. They describe reasonable and unreasonable sums and differences. Students use mental math to find the sums and differences of addition and subtraction facts at random. They solve addition and subtraction facts...

Students explore the concepts of estimating and rounding. In this estimating and rounding lesson, students play a game of tic-tac-toe. Students pick items and must estimate their cost by rounding. Students estimate the costs of pretend...

Students download information from a NASA website into a database. They transfer it to a spreadsheet by completing the information and analyze the information. They determine temperature averages, mode, and graph the results. They write...

Young scholars develop their own strategies to solve basic addition and subtraction facts. In this addition and subtraction lesson plan, students use strategies they already know and new ones to solve problems.

Students gather and analyze data from sports teams. In this measures of central tendency lesson, students gather information from websites about sports team performance. Students analyze and draw conclusions from this data. This lesson...

Youngsters discover the difference between estimating and guessing. They estimate how many items are contained in a jar as they read a story. After the story, pupils discover the differences between estimating and guessing and create a...

Learners use estimation to determine the answers to word problems by rounding whole numbers. For this estimation lesson plan, pupils compare and contrast solutions using the best answer.

Young mathematicians explore two-digit subtraction. They will investigate multiple ways to subtract numbers involving regrouping. Resources are provided.

Clean, but captivating, two online simulations demonstrate probability for middle schoolers. They can choose the number of coins and tosses and watch as the results pile up. They can choose from a variety of spinner types and the number...

First graders make sensible estimates and check the reasonableness of answers. They make up, tell and record number stories up to 9 about given objects. They skip count in twos, threes and fives.

Second graders examine the relationship between addition and subtraction. In this number sense instructional activity, 2nd graders practice their computation skills and use various strategies (including manipulatives...

Second graders become familiar with need strategies for computation of money problems and estimating sums. In this computation lesson, 2nd graders solve real life problems to understand estimation and money problems.

By examining a set of dice roll data, statisticians determine the probability of different sums occurring. They visit an interactive website and determine how many different vacation outfits Bobbie Bear will have based on the colored...