E.g. Insert a screen cast of the question you are working on. 
Values can be thought of as:  
Vectors or hops can be used to represent directed values.  
Ribbons or magnitude bars can be used to think about only the number’s magnitude..  
Objects can be linked together to model a story.
eg. Sandy had 8 cookies. Her mother gave her two more, then she gave three to her brother. 
Initially, the tool opens with whatever scale was selected from the opening screen.  
Click the settings button to adjust this scale.
Set the Minimum and Maximum values. 

Turn off automatically choose best scale to further customize the scale. 
Whole Number Example 1
There were 4 birds in a tree and then some more birds landed in the tree. Now there are 11 birds in the tree. How many more birds landed in the tree? 

Whole Number Example 2
Bob combined two Lego kits. One kit had 325 pieces and the other had 496 pieces. How many pieces does he have in all? Use math tools or models to justify your answer. 

Integer Example 1
The temperature at 7 am was +3°C. It rose 6°C by noon and then dropped 13°C by 7pm. What was the temperature at 7pm? 

Integer Example 2
I deposited a cheque for $320 dollars and then withdrew $400. What is the overall change in the value of my bank balance? 





This feature is not only useful for backtracking when a misstep is made, it enables a student to demonstrate their work from the start to the finish. They press Undo until they are at the start of their solution and then press Redo repeatedly, explaining each step. 







Alternatively, drag items to the recycle bin to remove them. 



specific settings described in detail below. Green highlights indicate that the setting is active. Click the white arrow to hide/show the panel. 









Linked objects move as one entity. Objects that are linked together are shown in light green. Objects that are not linked together are shown in dark green. 




Zoom in on a position by 
Zoom out by 
Zoom to fit by 
To pan 