? Adjustable numbers, gently scrolling, quick questions, no need to pay high prices for math questions
? Rotate and adjust the column type, can adjust 10 different queue methods
? Primary school students make one page a day to improve the speed and accuracy of oral arithmetic, cute and practical
? The imprint is clear, and it dries and does not fade after printing. Add printing oil, which can be used repeatedly, easy to use and fun
?Keep the kids busy and get yourself a moment of quiet when they need it. So, roller number teaching a great gift for our kids and even for parents.
