Browse by grade
Every material in this library is written for one specific grade, with that grade's standards, reading level, and mathematics. Each grade below has its own collection.
Kindergarten Kindergartners learn about water through their senses and through routines they already know. Materials for this grade use counting within 10, sorting, drawing, movement, and read-alouds, and they introduce the idea that clean water comes to us from a real place. 135 materials Grade 1 First graders add early reading and writing, counting to 120, and measurement with simple units. Because the science standards offer little water content at this grade, materials here lean on language arts, mathematics, and art, with weather observation as the main science thread. 134 materials Grade 2 Second graders measure in standard units, build bar graphs, and investigate where water is found on Earth, which their science standards address directly. Materials at this grade also use the freezing and melting of water to introduce reversible changes. 146 materials Grade 3 Third graders begin multiplication, scaled graphs, and the measurement of liquid volume in liters, a standard that is naturally about water. Materials here pair weather and climate data with the grade's new graphing skills and first structured paragraphs. 195 materials Grade 4 Fourth graders work with multi-digit arithmetic, measurement conversions, and the science of how water shapes the land through weathering and erosion. Informative writing with grouped ideas supports reports on rivers, erosion, and local water features. 205 materials Grade 5 Fifth graders operate with decimals, calculate volume, and graph on the coordinate plane, while their science standards ask them to model how Earth's spheres interact and to graph the distribution of salt and fresh water. This is the strongest elementary grade for combining water science with mathematics. 197 materials Grade 6 Sixth graders learn ratios, unit rates, and percent, which opens the door to authentic utility mathematics such as water bills and per-person use. Argument writing with evidence also begins this year, and materials here use real water questions to practice it. 368 materials Grade 7 Seventh graders extend proportional reasoning to multistep percent problems, exactly the mathematics of rate increases, and begin acknowledging counterclaims in argument writing. Sampling and probability connect to how water quality is actually monitored. 355 materials Grade 8 Eighth graders work with linear functions, systems of equations, scatter plots, and scientific notation. Materials at this grade compare rate plans, model tanks filling and draining, and analyze rainfall and reservoir data, alongside the mechanisms of the water cycle. 333 materials Grade 9 Ninth graders build algebraic models of real situations, study Earth systems and ecology, and take on their first evidence-file policy debates. Materials for this grade introduce the water sector's quantities and institutions without assuming prior background. 302 materials Grade 10 Tenth graders apply geometric modeling to tanks and pipes, begin chemistry, and evaluate public policy in civics. Materials here include structured debates, treatment chemistry at an introductory level, and career exploration across the sector's education paths. 304 materials Grade 11 Eleventh graders work with statistics and regression on real monitoring data, study the chemistry behind treatment in more depth, and connect water to United States history and government. Career materials become concrete as postsecondary decisions approach. 301 materials Grade 12 Twelfth graders take on capstone-level work: full operator-certification mathematics, statistical inference, utility finance and infrastructure policy, and projects with authentic audiences. Materials here also support the transition into water-sector training programs, apprenticeships, and degree paths. 271 materials