If you have a laminator, these cards will last for years. If not, clear packing tape works in a pinch!
For young learners in preschool, kindergarten, or first grade, numbers are abstract concepts. Flashcards bridge the gap between a squiggle on a page (the numeral) and a physical quantity. Helps kids identify 1-20 instantly.
Not all flashcards are created equal. A good "numbers flash cards PDF" should include: Bold, easy-to-read fonts.