Catching the Kidnapper
(View Complete Item Description)In this video segment from Cyberchase, the CyberSquad and Digit construct a physical profile of the person who kidnapped Choocroca, a giant cybercrocodile.
Material Type: Lecture
In this video segment from Cyberchase, the CyberSquad and Digit construct a physical profile of the person who kidnapped Choocroca, a giant cybercrocodile.
Material Type: Lecture
In this Cyberchase video segment, the CyberSquad is on the Island of the Little and must scale up a small boat that will fit Widgit. ***Access to Teacher's Domain content now requires free login to PBS Learning Media.
Material Type: Lecture
In this video segment from Cyberchase, the CyberSquad must scale down a large boat to escape the land of Proporciona, a land of giants. ***Access to Teacher's Domain content now requires free login to PBS Learning Media.
Material Type: Lecture
This task provides an opportunity to work on the Standard for Mathematical Practice 3 Construct Viable Arguments and Critique the Reasoning of Others.
Material Type: Activity/Lab
This is the sixth problem in a series of seven that use the context of a classroom election. While it still deals with simple ratios and easily managed numbers, the mathematics surrounding the ratios are increasingly complex.
Material Type: Activity/Lab
This word problem task involves ratios.
Material Type: Activity/Lab
This task requires students to computer currency exchanges.
Material Type: Activity/Lab
Students must convert yards to feet to solve this word problem.
Material Type: Activity/Lab
This word problem requires students to compute sales tax.
Material Type: Activity/Lab
The purpose of this task is to generate a classroom discussion about ratios and unit rates in context.
Material Type: Activity/Lab
In this task students use ratio and rate reasoning to solve the real-world problem of placing a security camara in a shop.
Material Type: Activity/Lab
In this task students use ratio and rate reasoning to solve a problem involving a sales item.
Material Type: Activity/Lab
In order to solve this problem, students must assume that if you mix a cubic foot of sand with a cubic foot of cement, you will have 2 cubic feet of mix.
Material Type: Activity/Lab
In this task students use ratio and rate reasoning to solve the real-world problem of a runners rate and distance.
Material Type: Activity/Lab
This task asks the students to solve a real-world problem involving unit rates (data per unit time) using units that many teens and pre-teens have heard of but may not know the definition for. While the computations involved are not particularly complex, the units will be abstract for many students.
Material Type: Activity/Lab
This is the last problem of seven in a series about ratios set in the context of a classroom election. Since the number of voters is not known, the problem is quite abstract and requires a deep understanding of ratios and their relationship to fractions.
Material Type: Activity/Lab
This is the first and most basic problem in a series of seven problems, all set in the context of a classroom election. Every problem requires students to understand what ratios are and apply them in a context. The problems build in complexity and can be used to highlight the multiple ways that one can reason about a context involving ratios.
Material Type: Activity/Lab
This is the second in a series of tasks that are set in the context of a classroom election. It requires students to understand what ratios are and apply them in a context. The simple version of this question just asked how many votes each gets. This has the extra step of asking for the difference between the votes.
Material Type: Activity/Lab
This is the fourth in a series of tasks about ratios set in the context of a classroom election. What makes this problem interesting is that the number of voters is not given. This information isnŐt necessary, but at first glance some students may believe it is.
Material Type: Activity/Lab
While students need to be able to write sentences describing ratio relationships, they also need to see and use the appropriate symbolic notation for ratios. If this is used as a teaching problem, the teacher could ask for the sentences as shown, and then segue into teaching the notation. It is a good idea to ask students to write it both ways (as shown in the solution) at some point as well.
Material Type: Activity/Lab