100 guided animations · 10 topic units · Free to explore
Make a prediction, change a value, and explain the result. Work through each unit in order or choose the topic you want to understand today. Every investigation has controls, a worked explanation, and a question to test your reasoning.
Your collection at a glance
Add signed changes
Investigations 1–10
Build equivalent batches
Investigations 11–20
Read a unit rate
Investigations 21–30
Find a percent of a whole
Investigations 31–40
Undo an unknown's operations
Investigations 41–50
Build base-times-height area
Investigations 51–60
Explain half a rectangle
Investigations 61–70
Stack volume layers
Investigations 71–80
Compare data summaries
Investigations 81–90
Count an equally likely event
Investigations 91–100
Related investigations use the same mathematical model with different questions and starting values. Reset restores the values used in that investigation’s worked answer. Read its assumptions before applying a model to a new situation.
100 animations · Showing 1–20
Grade 6 · Signed arithmetic
Add signed changes · Investigation 1 of 100
Temperature log investigation: add signed changes. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Signed arithmetic
Add signed changes · Investigation 2 of 100
Elevation survey investigation: add signed changes. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Signed arithmetic
Add signed changes · Investigation 3 of 100
Robot position investigation: add signed changes. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Signed arithmetic
Add signed changes · Investigation 4 of 100
Game score model investigation: add signed changes. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Signed arithmetic
Add signed changes · Investigation 5 of 100
Balance ledger investigation: add signed changes. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Signed arithmetic
Add signed changes · Investigation 6 of 100
Water-level gauge investigation: add signed changes. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Signed arithmetic
Add signed changes · Investigation 7 of 100
Number-line puzzle investigation: add signed changes. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Signed arithmetic
Add signed changes · Investigation 8 of 100
Laboratory adjustment investigation: add signed changes. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Signed arithmetic
Add signed changes · Investigation 9 of 100
Route marker investigation: add signed changes. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Signed arithmetic
Add signed changes · Investigation 10 of 100
Sensor calibration investigation: add signed changes. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Ratios
Build equivalent batches · Investigation 11 of 100
Robot controller investigation: build equivalent batches. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Ratios
Build equivalent batches · Investigation 12 of 100
Water-tank rule investigation: build equivalent batches. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Ratios
Build equivalent batches · Investigation 13 of 100
Ticket model investigation: build equivalent batches. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Ratios
Build equivalent batches · Investigation 14 of 100
Printing machine investigation: build equivalent batches. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Ratios
Build equivalent batches · Investigation 15 of 100
Calibration table investigation: build equivalent batches. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Ratios
Build equivalent batches · Investigation 16 of 100
Motion tracker investigation: build equivalent batches. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Ratios
Build equivalent batches · Investigation 17 of 100
Pattern laboratory investigation: build equivalent batches. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Ratios
Build equivalent batches · Investigation 18 of 100
Signal converter investigation: build equivalent batches. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Ratios
Build equivalent batches · Investigation 19 of 100
Scale comparison investigation: build equivalent batches. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animationGrade 6 · Ratios
Build equivalent batches · Investigation 20 of 100
Design constraint investigation: build equivalent batches. Change the quantities, follow the motion, and explain the result using the displayed mathematical relationship.
Explore animation