当前数学研究的趋势 Current trends in Mathematics

睡前数学 Bedtime Math

幼儿学前数学 preschool math for toddlers

学前数学思维训练 preschool mathematical thinking training

数学前沿 Frontiers of Mathematics in China

中国数学前沿 Frontiers of Mathematics in China

应用数学前沿 Frontiers in Applied Mathematics

我以前不喜欢数学 I did not like math ; I did not like mathematics

我以前最喜欢数学 I used to like mathematics

学前数字教学 Preschool Numbers