There is a problem where sometimes when you print a lesson, the top and left edges get clipped/cut. Here's a workaround you can try.
- Open VizZle in the Chrome browser.
- When you choose to print the VizZle lesson, in the Print dialog, click Change under Destination, select Save as PDF, then click Save.
- Open the PDF file you saved, and in your PDF viewer click Print.
- In your printer settings ensure "Fit to Page" is turned on.
This should allow the lesson to print on the page without being clipped.