With Telling Time to the Hour & Half Hour Color by Number, the more problems students get right, the more of the picture appears. Students match each item to the key, color it in, and a hidden picture appears. Students read clocks to the hour and half hour. Built for Grade 1 and aligned to 1.MD.B.3. Print it for morning work and centers or assign the self-checking interactive version for home — each download includes the PDF and the digital answer-key version.