Students can use these 16 task cards to practice problem solving skills with the part-part-whole model. Each card includes an addition or subtraction word problem within 20. If part-part-whole table is printed on the back of the word problem card and laminated, students can flip card and solve using dry-erase markers.
Cards can also be viewed on the iPad or on a projector for whole/small group practice. Print out as task cards for independent or partner practice.
I recommend printing several pages per sheet to save ink and to make cards smaller. Part-part-whole tables can also be printed as a worksheet.