This activity is a fun way for students to learn the teen numbers using ten frames. Students will cut out pieces of a train. When completed, each train will have three cars. The engine shows the teen tens frames. The middle car will have the equation (10 + 4). The caboose will have the answer (= 14). Students glue the correct pieces onto a piece of construction paper in a line to complete the train.Numbers 10 - 20 are included in this activity.