How about making an improvised ruler and protractor for use in geometry problems? This trick is little known, but perfectly legal.
Proper use of scratch paper is critical in tackling SAT/ACT math problems. Following is a list of things to keep in mind.
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When “doing the math,” write out all the steps.
Boil-down tough questions by jotting down notes about the clues you're given and what you’re trying to find (circle the main question words, underline the clues).
Write hybrid notes, half math, half English, to help make sense of difficult word problems.
Keep scratch work neat and organized (mark notes with problem numbers, etc.).
Re-draw on-screen figures for convenience and for illustrating known information.
Ask for more scratch pages, if you need them.
The SAT allows pens or pencils. Pencils can be mechanical pencils or wooden number 2 pencils. Don’t use mechanical pencils with .5mm lead (best to use .7mm or unbreakable .9mm lead). Bring at least two pens or pencils, in case one breaks.
The ACT only allows wooden number 2 pencils. Pens are prohibited.
The ACT only allows wooden number 2 pencils. Pens are prohibited.
Sharp pencils are best for scratch work. Slightly dull ones are better for filling-in bubbles quickly. Bring two of each, in case one breaks.
You'll need a good eraser, one that works and won't dig a hole into your paper.
If you're planning to use your pencils' erasers, first test each one by erasing fresh scribbling on paper.
However, tiny erasers on pencils can easily break off. It's best to bring a new rectangular eraser or "click" eraser. Make sure to "break in" the one you'll be using by erasing fresh scribbling on paper.
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