What lies below the ocean surface is still a great mystery. Many amazing discoveries have been made underwater, but there is so much more to know. Learn about plotting rational numbers as you read about the thrilling missions of underwater investigators.

This math reader integrates math and literacy skills, combining problem solving and real-world connections to help sixth grade students explore mathematics in a meaningful way.

• Let's Explore Math sidebars and a Problem Solving section provide opportunities for students to practice what they have learned
• The DOK-leveled Math Talk section provides critical thinking questions to help facilitate rich discussions while developing speaking and listening skills
• Advanced text features develop academic vocabulary and critical literacy skills