You've seen your own blood, when you have a cut or a scrape. You can see the veins in your wrist, and you've seen the scab that forms as a cut heals. But do you know what blood does for you? Without blood, you couldn't play, or grow, or learn. That's because just about every part of your body needs blood, from your muscles to your bones to your brain. How does your body use blood? Read and find out!

Let's Read and Find Out Science的人体2点读套装，精选自该系列Stage2部分（这一阶段适合6~12岁左右的孩子阅读），共七册，分别概述了“骨骼”、“皮肤”、“打嗝发抖打哈欠”、“食物的消化过程与人的消化系统”、“心脏和心跳”、“血管和血细胞”以及“病菌”等七个关于人体方面的主题。