ÄÁÅÙÃ÷ °ø¸ðÀü ¿Çѹø° Æ÷½ºÆÃÀÔ´Ï´Ù.
À̹ø ÁÖÁ¦´Â °£´ÜÇÏÁö¸¸ Àç¹ÌÀÖ´Â "°úÇнÇÇè"À» ¿µ¾î·Î Çغ¸±â ÀÔ´Ï´Ù..
1. "It's melting" ¿¡ °üÇÑ ÃÊ°£´Ü ½ÇÇè
- ¸ÕÀú, ³ì´Â°Í°ú ³ìÁö ¾Ê´Â °Í¿¡ ´ëÇØ ¾Ë¾Æº¾´Ï´Ù.
The ice cream melts.
The candle melts.
The clolk doesn't melt.
I don't melt.
- ½ÇÇèÇϱâ
Áغñ¹° : À¯¸®ÄÅ 2°³, ¶ß°Å¿î¹°°ú Â÷°Å¿î¹°(¾óÀ½¹°), ¼³ÅÁ, ¼Ò±Ý, Á¾ÀÌ
¶ß°Å¿î¹°°ú Â÷°¡¿î ¾óÀ½¹°Àº ÁغñÇÑÈÄ ¼³ÅÁÀ» ÇѽºÇ¬ ³Ö°í ³ì¿© º¾´Ï´Ù.
¶ß°Å¿î¹°Àº ±Ý¹æ ½º¸£¸¤~ ³ì°í, Â÷°¡¿î ¹°¿¡¼´Â Àß ³ìÁö ¾Ê´Â °ÍÀ» È®ÀÎ ÇÕ´Ï´Ù..
Sugra melts quickly in the hot water.
Sugar melts slowly in the cold water.
¼Ò±Ý°ú Á¾À̷εµ ½ÇÇèÇØ º¾´Ï´Ù..
°£´ÜÇÑ ½ÇÇèÀε¥µµ ¾ÆÀÌµé ³Ê¹« ÁÁ¾ÆÇÕ´Ï´Ù..
- Ç¥·Î Á¤¸®Çϱâ
2. ¹°ÁúÀÇ ¼ºÁú ºñ±³ ½ÇÇè
Put black paint into water.
Put that water in the bottle and put some oil in the bottle.
Mix them and watch them.
What will happen?
Water is going to the bottom and oil is going to the top.
They don't mix.
Do you know why?
¾ÆÀÌµé ¾î¼±¸ Àú²¨ÁÖ ½Ã²ô·´°Ô ÀÚ±âÀÇ°ßÀ» ¸»ÇÕ´Ï´Ù.
Because their dinsities are different.
Water is heavier than ole. and oil is going up to water.
3. ¹°ÀÇ ¼øȯÀ» ¾Ë¾Æº¸´Â ½ÇÇè
- »çÀüÁö½Ä (Prior Knowledge)
This Picture is about water cycle.
The water in the sea or river is evaporated by the syn.
The water turns into vaper and up into the sky.
The cool air makes the vapor condense into a cloud.
The cloud makes the rain.
And the water go back into the sea or river.
¸ÕÀú, ¹Ì¸® µÎ²¨¿î Ã¥À» ³Ãµ¿½Ç¿¡ ³Ö¾îµÓ´Ï´Ù.
¹°À» Á¶±Ý ³¿ºñ¿¡ ³Ö°í ²úÀÔ´Ï´Ù.
±×·¯¸é ¹°ÀÌ ¼öÁõ±â·Î º¯ÇÏ´Â °É º¼ ¼ö ÀÖ°í(evaporate)
À̶§ Â÷°¡¿öÁø Ã¥À» ¼öÁõ±â À§¿¡ ³õ°í ½ý¸é ¹°ÀÌ ÀÀ°á(condense)ÇÏ´Â °É º¼ ¼ö ÀÖ½À´Ï´Ù.
Water ==> Evaporation => Vapor => Condensation => Water ÀÌ·± ¼øȯ°úÁ¤À»
´«À¸·Î È®ÀÎÇÒ ¼ö ÀÖ½À´Ï´Ù.
- ÁØÇõÀÌ°¡ ´ÙÀ̾¿¡ Á¤¸®ÇÑ ¹°ÀÇ ¼øȯ ±×¸²ÀÔ´Ï´Ù.
È°µ¿ÈÄ, °ü·Ã Ã¥À¸·Î ¾ÆÁÖ ÁÁ½À´Ï´Ù.
4. ±¸¸§ ¸¸µé±â
- Áغñ¹° : big glass, hot water, plastic bag, tape(or rubber band)
1. Put hot water into the glass.
2. Cover with plastic bag and tap the cover.
3. Put some ice cubes on the plastic bag.
¼öÁõ±â°¡ ¸ÎÇô¼ »Ñ¿¸°Ô ±¸¸§Ã³·³ ¹¶Ä¡´Â °ÍÀ» º¼ ¼ö ÀÖ½À´Ï´Ù..
5. ¹Ð°¡·ç ÂûÈ븸µé±â (ORT : Make a mud pie)
Àß ±»Áö ¾Ê´Â ¹Ð°¡·ç ÂûÈëÀ» ¸¸µé¾î¼ ¿©·¯°¡Áö ¸ð¾çÀ» ¸¸µé¾î¿ä~
Áغñ¹° : ¹Ð°¡·ç 1ÄÅ, ¼Ò±Ý ¹ÝÄÅ, ¶ß°Å¿î¹°(3/4ÄÅ)¿¡ ½Ä¿ëÀ¯ 1¼ù°¡¶ô ź °Í
1. Put in flour (¹Ð°¡·ç¸¦ º×°í)
2. Mix in salt. (¼Ò±ÝÀ» 썪¾îÁÖ°í)
3. Put in water (¶ß°Å¿î¹°À» ºÎ¾î¼)
4. Mix it all together. (´Ù °°ÀÌ Àß 썪¾îÁÖ°í)
5. Tip it out. (Àï¹ÝÀ¸·Î ²¨³»¼)
6. Pat it flat (³³ÀÛÇÏ°Ô µÎµå·Á ÁÖ±â)
6. Àç¹ÌÀÖ°Ô °úÇÐÀ» ¹è¿ì´Â »çÀÌÆ®
http://school.discoveryeducation.com/homeworkhelp/science/science_homework_help.html
Lakes, Rivers, and Underground Water
Watch this program with your child, then find a local waterway in your area and explore where it starts and where it ends. [Video]
Use this exploration to talk about where the water comes from that goes into your local waterway. Use the Student Sheet for record-keeping and answering questions about the water begins and ends. [Exploration]
Learn about the different parts of a watershed and how water changes as it moves through the watershed to the ocean. [Video]
The Chemistry of Fireworks
July 4 fireworks are really all about chemistry. Investigate with your child what goes into making the "rocket's red glare" on Independence Day! [Video]
Take a look at how a simple home chemistry set was used to solve a complex crime involving forgery and murder. [Video]
Learn about the difference between acids and bases and what their common uses are. Use the pop-up button to click on the live screen to get more information. [Interactive]
City Birds
Summer is a perfect time to learn about the different species of birds. Whether you live in the city, country, or suburbs, you can turn your backyard into a place that attracts many different kinds of birds. [Video]
Organism Needs
Help your child learn about what habitats are, using the Exploration, Organism Needs. [Simulation]
Learn from Molly and Dave about how to build a habitat to attract many species of butterflies. [Video]