ISBN-13: 9781593632700 / Angielski / Miękka / 2007 / 96 str.
In Systems Book 1: Exploration, Culture, and Ecology, students will discover the solar system, the water cycle, and their family history (among many other things). In Systems Book 2: Settlement, Currency, and Measurement, students will discover their hometown history, probability math, and climatology (among many other things). In Systems Book 3: Economics, Climate, and Comparisons, students will explore the system of free enterprise, weather systems, and the systems on other planets (among many other things). Each book contains detailed lesson plans, reproducible activity sheets, and assessment tools. For Grade 4.