测试材料家长必读 Parents'notes 2
触摸材料 Feeling materials 4
闪亮和暗淡 Shiny and dull 6
透明吗 Is it see-through? 8
有多硬 How hard? 10
结实吗 How strong? 12
浮上来还是沉下去 Float or sink? 14
擦干净 Mop it up! 16
防水吗 Is it waterproof? 18
哪种更保暖 Which is warm? 20
神奇的磁铁 Amazing magnets 22
测试时间 It's quiz time! 24
使用材料家长必读 Parents'notes 28
物品分类 Sorting materials 30
像石头一样坚硬 Hard as stone 32
沙子城堡 Sandcastles 34
木头真好 Wood is good 36
纸的各种造型 Paper shapes 38
织毛线 Weaving yarn 40
塑料零件 Plastic parts 42
金属制造 Made of metal 44
像玻璃一样透明 Clear as glass 46
造砖 Building bricks 48
测试时间 It's quiz time! 50