Illustrative Mathematics
The Lighthouse Problem
Long considered the symbol of safe harbor and steadfast waiting, the lighthouse gets a mathematical treatment. The straightforward question of distance to the horizon is carefully presented, followed by a look into the different...
Curated OER
Home of the Brave
Students use various types of people and the special places they each call home. They discover houses, like the world, are always changing. Students start out by brainstorming what was the one thing that made a house a home. They were...
Curated OER
Calendars
Second graders read books and discuss the names of the days of the week, months, and their holidays and seasons. They discover the concept of the days in order, practicing sequencing using a pocket chart and perform a matching activity...