Illustrative Mathematics
Comparing Years
Who knew that the Egyptian, Julian, and Gregorian year were different lengths? Your mathematicians will! They will have to calculate the difference between the years in seconds and find the percent change. Using dimensional analysis,...
Math Worksheets Land
Markups and Markdowns Word Problems - Guided Lesson
Show your shoppers that knowing how to calculate the percent increase or decrease of an item is a handy tool to know when they are looking for a good sale. Use as a quick three example introduction to the topic. The guided practice comes...
CK-12 Foundation
Percent of Change: The Pizza Conundrum
Nine questions—multiple choice and fill in the blank—challenge mathematicians to solve money word problems. Looking closely at prices, scholars use a formula to identify percent increases and decreases based on an original and new price....
Flipped Math
Exponential Decay
The values keep getting smaller—quickly! Pupils watch a video that contrasts exponential decay with exponential growth from the first lesson in the unit. Learners identify exponential functions that are decaying and create graphs of...
Curated OER
Percentage Increase And Decrease
In this math worksheet, students practice calculating percentages when there is an original amount and then an increase or decrease. Students figure out what the new amount would be. No instruction is given on how to calculate these...
Curated OER
Graphs and Transformations of Functions
Is it possible to solve quadratic equations by factoring? It is, and your class will graph quadratic equation and functions too. They perform transformation on their graphs showing increasing and decreasing intervals, domain, and range....
EngageNY
Increasing and Decreasing Functions 1
Model situations with graphs. In the fourth installment of a 16-part module, scholars learn to qualitatively analyze graphs of piecewise linear functions in context. They learn to sketch graphs for different situations.
Curated OER
Decreasing and Increasing Fractions
Use this math lesson plan to help your fourth graders further their understanding of ordering fractions. After completing some whole-group activities together as a class, pairs of students play an online game which has them compare...
EngageNY
Increasing and Decreasing Functions 2
Explore linear and nonlinear models to help your class build their function skills. In a continuation of the previous lesson, learners continue to analyze and sketch functions that model real-world situations. They progress from linear...
Chicago Botanic Garden
Calculating Your Carbon Footprint
Unplugging from technology for one day per week will decrease your carbon footprint—are you up to the challenge? Part two in a series of three allows individuals to explore their personal carbon footprints. By first taking a quiz at home...
Illustrative Mathematics
Shirt Sale
Everyone loves a good deal, and your mathematician's job is to calculate the original price when given the discount. A different type of problem than the traditional "find the percent change" has your learners working backwards to...
Concord Consortium
The Temperature-Volume Relationship
What effect does temperature have on the volume of a gas? Observe the temperature-volume relationship through an animated simulation. The user controls the temperature, and a moveable piston reacts to increased or decreased thermal...
Health Smart Virginia
Stress Management Performance Task
Stress management is the focus of a three-part activity. First, scholars brainstorm a list of activities that decrease stress. Second, they document their feeling about stress—how they feel, their triggers, and calming activity. Finally,...
Curated OER
Finding Percent Change
In this percent of change worksheet, students determine the percent of increase and the percent of decrease. This two-page worksheet contains 24 problems. Answers are provided on the last page.
Math Worksheets Land
Multistep Ratio and Percent Word Problems - Matching Worksheet
Increasing and decreasing values happen every day and your learners will be prepared after practicing this worksheet. Show them how ratios are a convenient method to convert between values to get the answer they need. Resource also comes...
Curated OER
Decreasing Order: Positive and Negative Numbers
In this positive and negative numbers activity, 8th graders put 5 integers in order for 10 sets by writing the numbers in decreasing order.
Curated OER
Not Everything is More Expensive
Learners compare prices and determine percent increases and decreases of items in order to make wise purchases. In this percent increases and decreases lesson plan, students calculate the amounts based on grocery store ads.
Curated OER
Using a "Natural Function" not a equation to discuss derivatives
In this derivative worksheet, students relate the concept of the derivative to the "real world" model of seasons. Students are then asked to discuss zeros, increasing values, decreasing values, and critical values of this model. ...
Curated OER
Chemistry 12 Tutorial 2 - Enthalpy and Entropy
A beautifully designed, eighteen-page chemistry tutorial awaits your learners. The main topics: enthalpy and entropy. By completing this lesson, students will be able to define these concepts, determine whether each is increasing or...
American Chemical Society
Change in Temperature - Endothermic Reaction
Now that learners have been exposed to chemical changes, they learn that some take in heat and therefore, decrease in temperature. The same reaction that they have been investigating between baking soda and vinegar is revisited,...
Curated OER
A New Phase In Town
Middle schoolers explore heat energy and how it is used to change the phase of matter, and discover that temperature does not increase or decrease until the phase change is complete. This extremely well-written plan is packed with great...
Curated OER
Walking the Plank
This is a cool math activity. Kids collect and interpret data based on a physical act. A board is balanced between a scale and a step, learners record a peer's weight as it decreases while s/he walks further away from the scale. They...
Curated OER
Percent and Percentage Problems
In this Algebra I/Algebra II worksheet, students solve application problems involving percents, percent error, and percent of increase or decrease. The two page worksheet contains a combination of fourteen multiple choice and free...
Curated OER
Compound Interest
Pupils analyze the variables in the formula of a compound interest. They model the increase or decrease of an investment using compound interest and discuss different compounding periods.