Reveals: Erase and reveal

…If you use ink to cover over an object, typed text, or locked-ink object,…you can then erase that ink to reveal the object or text hidden below.…Let me share with you the following example.…Grabbing the eraser, I'm just erasing.…And voila, you see that the method that I'm…going to share with you today is erase and reveal.…On the next page, you see that I got a question.…What is the name of this invention and the erase, the answer already present.…

For my students, I want to go ahead and set this up so that they will…be able to erase and reveal that answer…after they have explored or discussed that answer themselves.…So, you'll notice that the background is yellow so when I put…ink over this writing, over this answer, I'm going to want to use yellow ink.…First step, let's go ahead and select the pen.…Now it doesn't actually matter which pen I choose,…but to save time I'm going to go ahead and…select the thick pen, the big black thick pen,…but of course, I'm not going to use black ink.…

Going over to my properties tab, I could switch to the yellow of the background.…