K-Gr 2—Youngsters are introduced to four famous scientists and mathematicians. The titles successfully take into consideration the grade levels of the readers. The texts provide interesting facts about the subjects, taking care not to overwhelm with too much information. Most readers will have heard of Neil deGrasse Tyson and Elon Musk, who are often in the news, and Katherine Johnson was featured in the popular 2016 film Hidden Figures. Appealing photos complement the prose and humanize these STEM giants. VERDICT These pleasant, engaging introductions to well-known scientists should appeal to young readers. Purchase where there is demand.