# Lesson 1

Collections

• Strings
• Arrays
• Hashes

Looping and Iteration Selection and Transformation

• #each, #map and #select

Methods Methods

• Use the study guide to get a list of methods
  • Strings
  • Arrays
  • Hashes

Practice Problems

• Lessons
• Small Problems
• SPOT Wiki
• Quizzes

# Lesson 2

Sorting

Nested Data Structures

Working with Blocks

• how do methods use the return value of a block

Practice Problems