3 1 10 Figures & Patterns Step 3-2 age 6+ Jeong, D.B Primary Author mixed material 8961970099 Seoul, Korea Genii Creation 2005 figures_step3-2_age6%2B.jpg Spaces Step 3-4 age 6+ Jeong, D.B Primary Author mixed material 8961970112 Seoul, Korea Genii Creation 2004 spaces_step3-4_age+6%2B.jpg Classification, Measuring & Relations Step 3-1 age 6+ Jeong, D.B Primary Author mixed material 8961970082 Seoul, Korea Genii Creation 2005 Classification_Step3-1_age6%2B.jpg