This is a worksheet I designed to use with my students for a math part-part-whole lesson we did on Picnic Day! I bought plates with three sections and gave each student crackers and cheese. They used the plates, crackers, and cheese to practice addition and subtraction problems, which they recorded on this worksheet. They had a blast! We did it whole group, but you could also use this as a fun math center using manipulatives on the plates rather than crackers and cheese.