Illustrative Mathematics
Illustrative Mathematics: G Srt, G Mg Coins in a Circular Pattern
In this task, students investigate how many coins will fit around a central coin when they are all of the same denomination, and if there is room left over. The teacher is given a chart of four coin denominations and their diameters, but...
Illustrative Mathematics
Illustrative Mathematics: 6.rp Currency Exchange
Students use ratio and rate to answer this performance task: Joe was planning a business trip to Canada, so he went to the bank to exchange $200 U.S. dollars for Canadian dollars (at a rate of $1.02 CDN per $1 US). On the way home from...
Cuemath
Cuemath: Natural Numbers
We see numbers everywhere around us - measuring the temperature, counting money, telling the time, etc. The numbers that are used for counting objects are called "natural numbers". This article explains the properties of natural numbers...
Illustrative Mathematics
Illustrative Mathematics: 2.md Susan's Choice
In this lesson plan students count the money and use symbols correctly to solve the word problem.
University of Missouri
Famous Trials: The Osage "Reign of Terror" Murder Trials
The "Reign of Terror" that overtook the Osage Reservation in 1921 is just one chapter in the long story of mistreatment of Native Americans by whites, but is one of the most horrifying. Before the chapter ends, untold dozens of Osage...