Eggsactly how many?

Melanie Zaferos, a teacher at E. W. Luther Elementary School in South Milwaukee, Wisconsin, selected this problem to try with her third- and fourth-grade students. She felt that this investigation would address the wide range of learning needs in her classroom by providing “a ‘low floor and high ceiling,’ meaning that all students could find an access point into the problem and that it had great potential for critical thinking and extension activities.”