“…Later, textbook research tended to focused on broader topics, such as quantum theory (Shiland, ), photosynthesis (Lloyd, ), respiration (Roseman, Stern, & Koppal, ; Soyibo, ), matter and energy flow (Stern & Roseman, ), organismal classification (Blackwell & Powell, ), and evolution (e.g., Hughes, ; Jiménez Aleixandre, ; Nehm et al, ). The development and later revision of Project 2061 Benchmarks (AAAS, ) sparked several research studies on the use and portrayal of central learning goals described in the benchmarks (e.g., Kesidou & Roseman, ; Naughton, Schreck, & Heikkinen, ; Roseman, Kesidou, Stern, & Caldwell, ; Roseman, Kulm, & Shuttleworth, ; Stern & Roseman, ).…”