Students explore the concept of the mean as they examine and compare scores for various sports events.
This task asks students to find and use two different common denominators to add the given fractions. The purpose of this question is to help students realize that they can use any common denominator to find a solution, not just the least common denominator.
This task asks students to use two different denominators to subtract fractions. The purpose of this is to help students realize that any common denominator will work, not just the least common denominator.
This is an activity about cause and effect. Learners will investigate various online sources to find data and other pertinent information regarding reported effects on Earth for the solar events they identified in the previous activities in this curriculum set. Then, they will summarize their findings for this activity as part of the overall Space Weather project. This is Activity 13 of the Space Weather Forecast curriculum.
In this task students have the opportunity to construct linear and exponential functions, including arithmetic and geometric sequences, given a graph, a description of a relationship, or two input-output pairs (include reading these from a table).
This lesson offers students the opportunity to engage in exploration of ways to sort different objects. The Lesson begins with a pre assesment option of students prior sorting knowledge. Students are given three shapes and asked to sort the shapes from left to right from smallest to largest. Then students are asked to trace the shapes in order for the teacher to keep as a record of student growth.
Once the pre assessment is given students are put into groups with different levels of ability. Students are then given materials to sort such as pattern blocks, animal counters, crayons, etc. (Additional suggestions are made on the website). Students work together to sort their objects and then discuss their rule for sorting.
Students come together in a large group to share their rule for sorting. Then students go back into their small groups and try to sort their objects in a different way by using the suggestions of their peers.
Finally, students can record their rule for sorting with sentences, words, or pictures depending on the grade/ability level.
This is an activity about searching online data archives for solar wind events. Learners will find at least three episodes of increased solar wind activity impacting Earth using direct measurements of solar wind velocity and density. Then, they will characterize each events by its rise time, the time it takes for the solar wind speed to rise from normal levels to the peak speed of the event, and the percentage increase in solar wind velocity. This is Activity 11 of the Space Weather Forecast curriculum.
This real world problem is appropriate for mental mathematics and students should be encouraged to think through the solution mentally.
These word problems require students to compare contexts for addition and subtraction.
The purpose of this task is to give 4th grade students a problem involving an unknown quantity that has a clear visual representation. Students must understand that the four interior angles of a rectangle are all right angles and that right angles have a measure of 90_ and that angle measure is additive.
This tasks examines how to calculate the area of an equilateral triangle using high school geometry.
In this Cyberchase video, Inez and Digit identify the location of the transformation using their knowledge of parallel and intersecting lines.
In this video segment from Cyberchase, Harry has a fixed budget for clothing, so he must figure out what combination of jackets and pants he can buy with $100.
This task requires students to find the measure of an angle.
This task helps students solidify their understanding of linear functions and push them to be more fluent in their reasoning about slope and y-intercepts. This task has also produced a reasonable starting place for discussing point-slope form of a linear equation.
This task "Uses facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure (7.G.5)" except that it requires students to know, in addition, something about parallel lines, which students will not see until 8th grade.
This task asks students to solve addition and subtraction equations with different structures so that they are able to see the connections between addition and subtraction more easily.
Mathematics
In this task students are asked to write an equation to solve a real-world problem. There are two natural approaches to this task. In the first approach, students have to notice that even though there is one variable, namely the number of firefighters, it is used in two different places. In the other approach, students can find the total cost per firefighter and then write the equation.
In this video segment from Cyberchase, Harry decides to train as a firefighter and uses line graphs to chart his physical fitness progress.