First steps in mathematics - Number: understand operations, calculate, reason about number patternsS Willis, W Devlin,L Jacob, B Powell, D Tomazos, K Treacymag(2004)引用 24|浏览1暂无评分AI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要