Camp Add 'Em Up is a series of lessons for first grade students. Students will use prior knowledge of friendly numbers (two number combinations that make a "10") and "adding on" as they master the ability to add three numbers. In this instructional activity, students will use manipulatives as they explore adding numbers to make sums up to 20. The Hundreds chart handout used in this instructional activity has English and Spanish number words which will accommodate students who wish to explore a second language or to aid Spanish ELL students.