Mesoamerica (Olmec, Maya, Inca, Aztec) STEM Challenges!Cross-curricular challenges for students who are studying Ancient Civilizations, Middle Ages, and/or Medieval Times!This resource has science, technology, engineering, and measurement activities to do with your upper elementary kids that will really enhance their learning! There are 2 Mesoamerica STEM Challenges in this pack. Each STEM Challenge has detailed directions, photo examples, a list of materials needed, prediction section, brainsto