{"product_id":"正方形四等分教具","title":"正方形四等分教具","description":"\u003cp\u003e小朋友做题遇到正方形四等分的题目，对于横切、竖切、十字切、X切、三角切都能理解，但不太能理解中心十字切任意角度都能把正方形四等分。\u003c\/p\u003e\u003cp\u003e所以就做了个小教具，可以比较直观地演示不同角度的情况。\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e做得比较仓促，只展示了中心十字切的情况，等后面有空了把横切、三角切的情况也加进来。\u003c\/p\u003e\u003cp\u003e不需要额外零件，直接打出来卡上就能用。\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e希望能帮到有类似需求的小朋友 :-)\u003c\/p\u003e\u003cp\u003eDesign by youneigui on MakerWorld (license: BY-SA).\u003c\/p\u003e","brand":"Mymadmanlab","offers":[{"title":"Default Title","offer_id":67417203147056,"sku":"MW-835442","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/0809\/5280\/files\/0.publish_a85ffbeb-83f2-4e3d-9928-c2c5e282d292.jpg?v=1785435845","url":"https:\/\/mymadmanlab.com\/products\/%e6%ad%a3%e6%96%b9%e5%bd%a2%e5%9b%9b%e7%ad%89%e5%88%86%e6%95%99%e5%85%b7","provider":"Mymadmanlab.com","version":"1.0","type":"link"}