칠교놀이 

？？사이트 링크

[초급] https://www.ebsmath.co.kr/url/go/96199

[중급] https://www.ebsmath.co.kr/url/go/96135

펜토미노

https://www.ebsmath.co.kr/resource/rscView?cate=10608&cate2=10625&cate3=10649&rscTpDscd=RTP01&grdCd=EGRD04&sno=28341&type=S&historyYn=study

 펜토미노2

https://www.ebsmath.co.kr/resource/rscView?cate=10609&cate2=10633&cate3=10657&rscTpDscd=RTP01&grdCd=EGRD04&sortType=C&mngtPrdnYn=&menuType=t&itemSize=12&level=%5BDIF02%2C+DIF03%2C+DIF06%2C+DIF01%2C+DIF07%2C+DIF08%2C+DIF09%2C+DIF10%2C+DIF11%5D&type=S&sno=28345&historyYn=study&evtSsnCd=&add1=