kyu-young, look at this picture. (±Ô¿µ¾Æ, À̱׸²ºÁºÁ) What are they? (ÀÌ°Ô¹»±î?) They are teeth! (ÀÌ) Do you know what they do in our body? (ÀÌ°¡ ¿ì¸®¸ö¿¡¼ ¾î¶²¿ªÇÒÀ» ÇÏ´ÂÁö ¾Æ´Ï?) Teeth help to cut and chew foods. (ÀÌ´Â À½½Ä¹°À» ÀÚ¸£°Å³ª ¾Ã´Â°É µµ¿ÍÁØ´Ù.) But look at the little germs sittingon the teeth. (±×·¯³ª ÀÌ¿¡ ¾É¾ÆÀÖ´Â ÀÛÀº±ÕµéºÁ.) If you don't brush your teeth everyday, these little germs will get to your teeth and make a black hole in them. (¸ÅÀÏ ³×°¡ À̸¦´ÛÁö¾ÊÀ¸¸é ÀÌ Á¡µéÀÌ ±¸¸ÛÀ» ¸¸µç´Ù.) Then your going to the dental-clinic. (±×·³ Ä¡°ú¿¡ °¡¾ßÇØ.) So be careful and always brush your teeth! (Ç×»ó À̸¦ Àߴ۾ƶó.) What do I need? ¨Ícalcium carbonate(ź»êÄ®½·), ¨Îcarbon magnesium(ź»ê¸¶±×³×½·) with borax(ºØ»ê), ¨Ï1 glycerine liquid(Mint flavored), Wooden stick, beaker, food coloring ÀÌ Àç·áµé¿¡¼ ºØ»êÀº »ì±ÕÁ¦°ÅÀÇ È¿°ú/ ź»ê¸¶±×³×½·°ú ź»êÄ®½·Àº Ä¡¾Æ¿¡ ºÙÀº Â±â¸¦ Á¦°ÅÇϴ¿ªÇÒ/ ¹ÚÇÏÀ¯¿Í ±Û¸®¼¼¸°¿ë¾×Àº Çâ·á·Î ¾²ÀÔ´Ï´Ù. What do we need when we brush our teeth? (À̸¦ ´ÛÀ»¶§ ¹¹°¡ ÇÊ¿äÇÒ±î?) A tooth brush and toothpaste! (Ä©¼Ö°ú Ä¡¾à) Today we are going to make our own toothpaste and toothbrush. (¿À´ÃÀº ¿ì¸®°¡ Ä¡¾à°ú Ä©¼ÖÀ» ¸¸µéÀÚ.) Now, let's start the experiment. 1)Pour ¨Íinto the beaker.(ºñÀÌÄ¿¿¡ ¨Í¸¦³ÖÀÚ.) 2)Pour ¨Îinto the beaker. 3)Pour the food coloring into the beaker. 4)Pour ¨Ï slowly into the beaker. 5)Stir them well.(Àß Àú¾î) Which food is good for your teeth? (¾î¶² À½½ÄÀÌ ¿ì¸®ÀÌ¿¡ ÁÁÁö?) Which one is bad for your teeth? (¾î¶² À½½ÄÀÌ ÀÌ¿¡ ¾ÈÁÁÀ»±î?) Have fun with the stickers. (½ºÆ¼Ä¿¸¦ ºÙÀÌÀÚ.) Are apples good for your teeth? (»ç°ú´Â ÀÌ¿¡ ÁÁ´Ï?)