In this qualitative study, the researchers investigated the types of K-6th grade lessons 16 preservice elementary teachers created based on mathematics-themed children's books. Lessons were analyzed using Stein et al.'s (2017) Task Analysis Guide (TAG), as well as grouped based on grade level and covered Common Core State Standards Mathematical Practices (CCSSO, 2010a) and Content Standards (CCSSOa, 2010). Through our analysis, we found that the most common CCSSM Standards used were Numbers and Operations as well as Expressions and Equations, while the most common CCSSMP were "Reason Abstractly and Quantitatively" and "Model with Mathematics." Coding work showed the most common TAG classification was "Procedures with Connections." Sample lessons and teacher implications were discussed.