Lesson Plan
Illustrative Mathematics

Reasoning about Multiplication and Division and Place Value, Part 2

For Teachers 5th - 7th Standards
The learner puts reasoning and estimation to work. The directions are to place a decimal in the answer to make the equation true. Pupils are to look at the two problems, one multiplication and one division, and estimate an answer. No...
Lesson Plan
Illustrative Mathematics

Dimes and Pennies

For Teachers 3rd - 5th Standards
Help your fourth graders make cents out of fractions and decimals with this short word problem. After learning that dimes are one-tenth and pennies one-hundredth of a dollar, students write a fraction and decimal for a given number...
Lesson Plan
West Contra Costa Unified School District

Decimals and Fractions

For Teachers 3rd - 4th Standards
Reinforce the concept of fractions and decimals as part of a whole with a lesson plan that begins with a mixed review, then goes into a three problem guided practice, and ends with a collaborative activity. The guided practice and...
Activity
Curated OER

Math Games for Skills and Concepts

For Teachers 2nd - 5th
A 27-page packet full of math games and activities builds on algebra, measurement, geometry, fractional, and graphing skills. Young mathematicians participate in math games collaboratively, promoting teamwork and skills practice.
Lesson Plan
Curated OER

Compounding with 100% Interest Rates

For Teachers 9th - 12th Standards
Your young economists will be amazed at the effect of compounding interest more frequently in this collaborative task about making sound financial choices. Learners are walked through the calculations of a couple of examples and then...
Activity
2
2
Illustrative Mathematics

Calculating the square root of 2

For Teachers 7th - 10th Standards
Does a calculator give you the exact value of the square root of 2? Here, learners must decide if 1.414236 is equal to the square root of 2. They must also explain why the square root of 2 could never be equal to a terminating decimal....
Lesson Plan
Illustrative Mathematics

Calculating and Rounding Numbers

For Teachers 7th - 9th Standards
Mathematicians need to know that not all numbers are rational. We approximate irrational number with rational numbers. That is why a calculator may be misleading. This task give learners an opportunity to see how rounding a number and...
Lesson Plan
Curated OER

Compounding with a 5% Interest Rate

For Teachers 9th - 12th Standards
The balance in an account continuously compounding interest is the context of this engaging task. Your young accountants will investigate the ending balance in an account as they compound the interest more and more. Learners write the...
Lesson Plan
Curated OER

Rising Gas Prices – Compounding and Inflation

For Teachers 9th - 12th Standards
Financial literacy skills and exponential models are connected by the compound interest formula in this task centered on inflation calculations. Collaborative learners get experience collecting data from the given websites and exploring...
Lesson Plan
Curated OER

Quinoa Pasta 3

For Teachers 9th - 12th Standards
A mixture of quinoa and corn is for dinner in this collaborative task that sets up nicely as a system of linear equations. Your supper guests discuss numerical precision and percentages as they formulate a plan of how to solve the problem.
Activity
Homeschool Math

Homeschool Math: Decimal Place Value: One Decimal Digit

For Students 4th
This is a complete lesson with instruction and varied exercises, explaining how the place value system works with decimals that have one decimal digit, and how to write such decimals in expanded form.
Activity
Texas Instruments

Texas Instruments: Putting Things in Place

For Teachers Pre-K - 1st Standards
In this activity, students investigate the value of the digits in $8,205.50 and determine the number of thousands, hundreds, tens, ones and even the number of dimes and pennies. The concept is then extended to additional situations. They...
Activity
TOPS Learning Systems

Top Science: Decimal Bounce [Pdf]

For Students 5th - 7th Standards
An activity where students learn the meanings of metric prefixes, and how to use them with decimal numbers and with different units of measurement.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Decimals, Expressions, Operations

For Students 9th - 10th Standards
Twenty problems presented on the topics: working with expressions, using the distributive property, decimal place value and decimal operations. They are given with each step to the solution cleverly revealed one at a time. You can work...
Activity
University of Colorado

University of Colorado: Ph Et Interactive Simulations: Make a Ten

For Students 3rd - 5th
An interactive simulation that teaches about place value, addition, and subtraction by adding, breaking apart, and combining numbers by making tens and focusing on place value. This simulation can either be downloaded or played online...
Activity
The Math League

The Math League: Percent & Probability

For Students 3rd - 8th
This tutorial gives definitions and examples of percents and probability and covers percent as a fraction and percent as a decimal.
Activity
Homeschool Math

Homeschool Math: Comparing Decimals

For Teachers 3rd - 6th Standards
This is a complete lesson with video instruction [5:49] and varied exercises about comparing decimals with 1 or 2 decimal digits.
Activity
Texas Instruments

Texas Instruments: Numb3 Rs: Onion Peeler

For Teachers 9th - 10th
Based off of the hit television show NUMB3RS, this lesson introduces students to the concept of changing number bases, as well as gives some insight into Internet privacy through "onion routing." Students translate hexadecimal numbers...
Activity
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: Subtracting Whole Numbers and Decimals

For Students 3rd - 8th Standards
If you are looking for a website that explains and defines subtraction with decimals you have arrived at an excellent resource. There are even practice problems at the very end of the lesson.
Activity
AAA Math

Aaa Math: Subtracting Decimals

For Students 9th - 10th
This personal site explains how to subtract decimals of the tenths place value. Includes games to practice this skill.
Activity
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: Percents Are Ratios

For Students 3rd - 8th Standards
This Math Page tutorial explains how percents are ratios and then features a practice exercise.
Activity
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: Multiplying and Dividing by Powers of 10: The Meaning of Percent

For Students 3rd - 8th Standards
This excellent math resource explains and defines the meaning of percent. Multiplying and dividing by a power of 10 is incorporated as a preview to understanding scientific notation.

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