Illustrative Mathematics
Comparing Numbers
Young mathematicians spin their way to a deeper number sense with this fun, collaborative activity. Using two spinners, one with the numbers 0-9 and the other with the decades 00-90, pairs of students take turns building and comparing...
Illustrative Mathematics
“Crossing the Decade” Concentration
Young mathematicians concentrate on learning to fluently count. Following the rules of the classic game Memory, children take turns flipping over cards in order to find pairs of numbers that cross a decade (e.g. 29 and 30). For younger...
Curated OER
Choosing Numbers That Make Sense
In this number sense worksheet, students complete each of 4 word problems using decade numbers. They add or subtract to determine the answer to the problem.
Curated OER
Complex Numbers
In this algebra activity, students solve complex numbers using multiplication and division properties. There are 10 questions with an answer key.
Curated OER
Follow the Decade Rules
In this number sense worksheet, students find the missing numbers. Students are to find the missing number or numbers using the rule supplied, or find the rule for the numbers supplied to complete each of the eight charts.
Curated OER
Counting Lesson Plan
In whole group practice, children count together and identify how many objects are drawn on butcher paper, increasing the number when they have achieved fluency. In pairs, they count manipulatives. They then copy series of numbers from...
Curated OER
Decade Toss
In this decade worksheet, students fill in a decade chart and find the totals of each player based on a decade game that is played. Students fill in 3 spots on the chart and answer 3 short answer questions.
Curated OER
Counting Across Decades, Using Number Lines
Your youngsters will use number lines to determine how many more the child in each story problem needs.
National Wildlife Federation
Quantifying Land Changes Over Time Using Landsat
"Humans have become a geologic agent comparable to erosion and [volcanic] eruptions ..." Paul J. Crutzen, a Nobel Prize-winning atmospheric chemist. Using Landsat imagery, scholars create a grid showing land use type, such as urban,...
Association of American Geographers
Project GeoSTART
Investigate the fascinating, yet terrifying phenomenon of hurricanes from the safety of your classroom using this earth science unit. Focusing on developing young scientists' spacial thinking skills, these lessons engage learners in...
Curated OER
Factors In Population Growth
Students examine both historical and recent estimates of world population. They identify regions of the world that have had significant population growth in the last decade and speculate on reasons for this.
National Woman's History Museum
Women's Suffrage Movement
The National Women's History Museum offers a 20-slide presentation that details the history of the Women's Suffrage Movement from its creation in the 1830s through the passage of the Nineteenth Amendment in 1920.
Curated OER
Free Printables: Number Cards
In this number sequences worksheet, student cut out the number cards on the worksheet. The number cards can be used for many purposes, including arranging them in a specific number sequence. Teachers can use the worksheet generator to...
Curated OER
Pennsylvania facts by the numbers
In this Pennsylvania facts instructional activity, students research Pennsylvania history and trivia and answer questions where they calculate the answers about Pennsylvania. Students complete 10 questions.
Curated OER
A Look Into the Past
Students create a timeline that is broken down into significant events that are divided into decades. They participate in open discussion and create some open ended questions to stimulate further conversation.
Curated OER
Golf and Divorce
There seems to be an interesting relationship between the increasing numbers of golf courses and divorce. Assess student understanding of correlation and causation by asking them to explain what it is. Use this short activity as a class...
Curated OER
Spiritual Health: Serving the Whole Person
Students investigate a web-course designed to help them develop an understanding of their spiritual lives, find resources for spiritual emergencies and to consider the meaning of death. This course is Christian and Biblical-based.
Curated OER
Exploring Number Systems
Students work in a group to prepare a poster about a new number system. They research a variety of number systems, create new symbols for their original number system and develop a tutorial for the class.
Curated OER
The Population Explosion: Causes and Consequences
Students use this lesson to focus on population growth and the threat of overpopulation. In groups, they analyze the world birth and death rates to determine the growth rate of the population. As a class, they discuss the causes and...
Curated OER
User Friendly
Students explore how consumers have become as proficient in computer technology as specialists were a decade ago. They create and conduct a test to determine the proficiencies of people in their school community.
Curated OER
Population Explosion
Students examine both historical and recent estimates of world population. They identify regions of the world that have had significant population growth in the last decade and speculate on reasons for this.
Federal Reserve Bank
Financial Crises, Reform, and Central Banking: Establishing the Federal Reserve
From the First and Second Banks of the United States to the founding of the Federal Reserve, discover how the American nation attempted to reform its financial history throughout the years.
Global Oneness Project
Communities on the Threshold of Change
Viewers of the short documentary Santa Cruz Del Islote consider how changes in climate and overfishing impact the life style of the 1,200 residents of a small island off the coast of Cartagena, Columbia.
Serendip
Changing Biological Communities – Disturbance and Succession
After cutting down a forest to make a farm, how long would it take the environment to turn an abandoned farm back into a forest? Scholars study this exact scenario while they interpret many charts and graphs of the changing ecosystems as...