This title contains 24 self-checking task cards for students to practice estimation with all four operations. Students solve each task card and record their answer on a recording sheet. They then scan the QR code on the card to check their answer.
QR codes highly engage my students and help them become independent learners. These cards are great for centers, work stations, or fast finishers.
To scan QR codes, you need an iPod fourth generation or higher, iPAD 2 or higher, or a Smartphone with a built-in camera. Instructions on scanning QR codes are included. See preview to see exactly what you will be receiving.