Amazon.com description: Product Description: Real-life situations and relatable narratives guide math students through the fundamentals of algebra, which is an essential part of second-grade math. Readers will learn the skills needed to fluently add and subtract, while also building a foundation for the more complex skills that will be needed at higher levels of education. Engaging visuals complement high-interest topics, while visually appealing designs help to make the math concrete. This title teaches addition skills through a narrative about the rewards of volunteering. This volume meets CCSS Math Standard 2.OA.A.1.