Ó¢Óï¿ÆÆÕÀàÎÄÕÂ
ѧϰÀ²¡¾Ó¢ÓïÎÄÕª¡¿ ΤÑåʱ¼ä£º2016-08-29 14:50:46ÎÒҪͶ¸å
¡¡¡¡¿ÆÆÕ½ÌÓý¶ÔÎÒ¹úС¿µÉç»á¡¢ºÍгÉç»áµÄ½¨ÉèÓÐ×ÅÖØÒªµÄÒâÒå¡£ÏÂÃæÊÇѧϰÀ²Ð¡±à´øÀ´µÄÓ¢Óï¿ÆÆÕÀàÎÄÕ£¬»¶ÓÔĶÁ!
¡¡¡¡Ó¢Óï¿ÆÆÕÀàÎÄÕÂ1
¡¡¡¡ÌýµãСÒôÀÖ ÇáËÉѧ·ÖÊý
¡¡¡¡Stuck on a tricky math problem? Start clapping. Grade school kids who learned about fractions through a rhythm-and-music-based curriculum outperformed their peers in traditional math classes. The work is inEducational Studies in Mathematics.
¡¡¡¡±»Ò»ÌõÊýѧÌâÄÑסÁË?ÅÄÅÄÊÖÊÔÊÔ°É¡£Ñо¿±íÃ÷£¬Ð¡Ñ§ÉúÔÚÓнÚ×à¸ÐµÄÒôÀÖ±³¾°ÏÂѧϰ·ÖÊý֪ʶµÄЧ¹û»áºÃÓÚ´«Í³¿ÎÌÃ(¾ßÌåÑо¿·¢±íÔÚ¡¶Êýѧ½ÌÓýÑо¿¡·Éϵġ¶Ñ§ÊõÐÔÒôÀÖ£ºÈçºÎÓÃÒôÀÖ¸¨ÖúÈýÄ꼶СѧÉúѧϰ»ù´¡·ÖÊý¡·Ò»ÎÄ£¬×÷ÕߣºËÕɺ·¿ÆÈðµÈ)¡£
¡¡¡¡Fractions let you divide up a measure of music into notes of varying length. For example, one four-beat measure could contain a single whole note held for all four beats, two half notes of two beats apiece, four quarter notes of a beat each, and so on. In the Academic Music program, based on the Kodaly method of musical education, students clap, drum and chant to memorize the lengths of musical notes—then solve problems in which fractional notes must add up to a full measure of music.
¡¡¡¡¸ù¾Ý·ÖÊýµÄ¸ÅÄһ½ÚÒôÀֿɷֳɳ¤¶Ì²»Ò»µÄ¼¸´®Òô·û¡£ÀýÈ磬һ½ÚËÄÅÄ×ӵĵ÷×ӿɰüº¬Ò»¸ö´ú±íËÄÅÄ×ÓµÄÈ«Òô·û£¬Á½¸ö¸÷´ú±íÒ»¸ö¶þÅÄ×ӵĶþ·ÖÒô·û£¬Ëĸö¸÷´ú±íÒ»¸öÒ»ÅÄ×ÓµÄËÄ·ÖÒô·û……ÒÔ´ËÀàÍÆ¡£ÔړѧÊõÐÔÒôÀÖ”ÏîÄ¿ÖУ¬Ñо¿ÈËÔ±ÒÔ¿Æ´ïÒÁµÄÒôÀÖ½ÌÓý·½·¨Îª»ù´¡£¬ÈÃѧÉúͨ¹ý´òÅÄ×Ó¡¢Çùġ¢ºÏ³ª¼Çס¸÷Òô·ûµÄ³¤¶È£¬Ñ§Éú±ØÐë°ÑÕâЩƬ¶Î¼ÓÆðÀ´£¬²ÅÄܵõ½Ò»½ÚÍêÕûµÄÒôÀÖ——Èç´Ëʵ¼ù¿É½â¾öѧÉú¶Ô·ÖÊýµÄÒÉ»ó¡£
¡¡¡¡Sixty-seven students participated in the study. Half did math problems using the Academic Music system. And after six weeks, the students in the music program averaged 50 percent higher on tests than did the kids in regular math class. Fractions create a solid foundation for further math education—so mastering them is music to educators' ears.
¡¡¡¡ÓÐ67ÃûѧÉú×÷ΪʵÑé¶ÔÏó²ÎÓëÁ˱¾´ÎÑо¿£¬ÆäÖÐÓÐÒ»°ëÔړѧÊõÐÔÒôÀÖ”ÌåϵϽâ¾öÊýѧÎÊÌâ¡£ÁùÖܺó£¬ËûÃÇÔÚ²âÊÔÖеĵ÷ÖÒª±ÈÆÕͨ°à¼¶ÖеÄѧÉúƽ¾ù¸ß50%¡£·ÖÊýÊǽøÒ»²½½øÐÐÊýѧ֪ʶ½ÌѧµÄ»ù´¡——Èç´Ë¿´À´£¬Õ⻹¶à¿÷Á˽ÌÓýÕߵĶú¶ä¡£
¡¡¡¡Ó¢Óï¿ÆÆÕÀàÎÄÕÂ3
¡¡¡¡Ê®ÍòÄêǰµÄÑÕÁϹ¤×÷ÊÒ
¡¡¡¡Archeologists have discovered a paint production studio in an ancient South African cave A new archaeological find may signify one of the great leaps in human cultural and cognitive history. Because researchers have discovered a 100,000-year-old art studio. It was known that ochre—rock with red or yellow pigments—was used for paint even that far back in history. But there was scant evidence for how it was prepared and handled. Then, in 2008, researchers uncovered an ochre mixing kit in a South African cave. They found two abalone shells, most likely used for paint mixing and storage. They also found ochre, bone, charcoal, grindstones and hammerstones. The researchers say the ochre was probably rubbed on quartzite slabs to create a fine powder. It was then mixed and heated with other crushed substances, including other stones or mammal-bone. Microscopic striations on the inner abalone surface likely are likely scrape marks left during paint mixing. The research was published in the journal Science. The paint may have been used for body adornment or for long-gone artwork. And the presence of this paint-production laboratory indicates that the early humans knew basic chemistry and could plan for the future.
¡¡¡¡¿¼¹Åѧ¼ÒÔÚÄϷǵÄÒ»¸ö¹ÅÀ϶´Ñ¨Öз¢ÏÖÁËÒ»¸öÓÍÆáÖÆ×÷¹¤×÷ÊÒ¡£Õâ¸öеĿ¼¹Å·¢ÏÖ¿ÉÄÜÊÇÈËÀàÎÄ»¯ºÍÈÏÖªÀúÊ·µÄ×îΰ´óµÄ¿çÔ½Ö®Ò»¡£ÒòΪÑо¿ÈËÔ±·¢ÏÖµÄÕâ¸ö¹¤×÷ÊÒ²úÉúÓÚÊ®ÍòÄêǰ¡£ÖÚËùÖÜÖª£¬ÓµÓкìÉ«»ò»ÆÉ«É«ËصÄô÷ʯÑÒÒ»Ö±±»¹ã·ºÔËÓÃÓÚ»æ»ÖУ¬µ«È´ÉÙÓÐÖ¤¾ÝÏÔʾËüÊÇÈçºÎÖÆ×÷²¢ÔËÓõġ£2008Ä꣬Ñо¿ÈËÔ± ÔÚÄϷǵÄɽ¶´Öз¢ÏÖÁËô÷ʯ»ìºÏ¹¤¾ß£¬ Á½¸ö¿ÉÄÜÓÃÓÚµ÷ÆáºÍ´¢´æµÄ±«Óã¿Ç£¬³ý´ËÖ®ÍâËûÃÇ»¹·¢ÏÖÁËô÷ʯ£¬¹ÇÍ·£¬Ì¿±ÊºÍʯ´¸¡£Ñо¿ÈËÔ±³Æ£¬ÕâЩô÷ʯºÜÓпÉÄܾ¹ýÔÚʯӢÑÒ°åÉÏ×ÐϸÑÐÄ¥ºó£¬µÃµ½ÉϵȵķÛÄ©£¬È»ºóÔÙÓë ÆäËûʯͷ»òÕßÊDz¸È鶯ÎïµÄ·ÛÄ©»ìºÏ²¢¼ÓÈÈ¡£ÓÃÏÔ΢¾µ¹Û²ì±«Óã¿ÇµÄÄÚ±íÃæ£¬Äã¿ÉÒÔ·¢ÏÖһЩ¹ÎºÛ£¬ÕâЩ¶¼ÓпÉÄÜÊÇÔÚ»ìºÏÑÕÁϵĹý³ÌÖÐÁôÏÂÀ´µÄ¡£Õâ¸ö·¢ÏÖÒѾ±»¿¯µÇÔÚ¿ÆÑ§ÆÚ¿¯ÉÏ¡£ÕâЩÑÕÁÏ¿ÉÄÜÒ»Ö±±»ÔËÓÃÔÚÈËÌå²Ê»æºÍ³¤¾Ãʧ´«µÄÒÕÊõÆ·ÉÏ¡£¶øÇÒÕâЩÑÕÁÏÖÆ×÷¹¤×÷ÊҵĴæÔÚ±íÃ÷ÁËÔçÆÚÈËÀà¶Ô»¯Ñ§ÒÑÓÐÁË»ù±¾µÄÁ˽Ⲣ¾ßÓÐÁ˹滮δÀ´µÄÄÜÁ¦¡£ÑÕÁϹ¤¾ßµÄһС²½£¬ÈËÀàÀúÊ·µÄÒ»´ó²½——ÐÁÎ÷ÑÇĪ¡£
¡¡¡¡Ó¢Óï¿ÆÆÕÀàÎÄÕÂ3
¡¡¡¡ÄãÖªµÀ·¢ÉÕµÄÃî´¦Âð?
¡¡¡¡Fever can play a variety of roles, such as inhibiting pathogen replication. It also apparently increases the population of killer T cells of the immune system. Christopher Intagliata reports.
¡¡¡¡·¢ÉÕÓжàÖÖ²»Í¬µÄ×÷Óã¬ÈçÒÖÖÆ²¡¾ú¸´ÖÆ¡£Ëü»¹¿ÉÒÔÏÔÖøÔö¼ÓÃâÒßϵͳÖÐɱÉËÐÔTϸ°ûµÄÊýÁ¿¡£
¡¡¡¡I've always thought that when I get a fever, it's my body trying to make things uncomfortable for the invading pathogen. And that's often true—higher temperatures can inhibit the bad guys' ability to replicate. But my fever may actually be a one-two-punch. In addition to slowing down the invader, the heat helps the immune system recruit more troops for a counter-attack. That finding appears in the Journal of Leukocyte Biology.
¡¡¡¡ÎÒºÜÔç¾ÍÖªµÀ£¬·¢ÉÕµÄʱºò£¬ÆäʵÊÇÎÒµÄÉíÌåÕýÔÚ¶ÔÈëÇֵIJ¡ÔÌå×ö³öµÖ¿¹¡£ÕâÊÇÊÂʵ---¸ßοÉÒÔÒÖÖÆ»µ²¡¾ú¸´ÖƵÄÄÜÁ¦¡£µ«·¢ÉÕ¸üÊÇÒ»¸ö×éºÏ´ò»÷¡£³ýÁ˼õ»º²¡ÔÌåµÄÈëÇÖ£¬¸ßοÉÒÔ°ïÖúÃâÒßϵͳÕÙ¼¯¸ü¶àµÄ²¿¶Ó×ö³öµÖ¿¹¡£ÕâÒ»Ñо¿·¢±íÔÚ¡¶°×ϸ°ûÉúÎïѧÔÓÖ¾¡·¡£
¡¡¡¡Researchers warmed up one group of mice to body temperatures of about 103 degrees Fahrenheit. They left another group at normal core temperature—about the same as ours. Then they injected both groups of mice with an antigen, a substance that attracts the attention of the immune system.
¡¡¡¡Ñо¿ÈËÔ±½«Ò»×éÀÏÊóµÄÌåÎÂÉý¸ßµ½103»ªÊ϶ȣ¬ÁíÍâÒ»×é±£³ÖÕý³£ÌåÎÂ---´óÔ¼ÊÇÈËÌåζȡ£È»ºóÏòÕâÁ½×éÀÏÊóµÄÌåÄÚ×¢É俹ԗ—Ò»ÖÖ»áÒýÆðÃâÒßϵͳ·´Ó¦µÄÎïÖÊ¡£
¡¡¡¡Blood samples taken three days later revealed that the feverish mice had nearly twice as many killer T-cells: the kind of immune cells that can hunt down infected cells or tumor cells, and slaughter them.
¡¡¡¡ÈýÌìºó£¬ÕâÁ½×éÀÏÊóµÄѪÑù±íÃ÷£¬ÌåνϸßÀÏÊó×éÌåÄÚµÄɱÉËÐÔTϸ°ûÊÇÕý³£×éµÄ2±¶£¬ÕâÖÖÃâÒßϸ°û¿ÉÒÔ×·×Ù¸ÐȾϸ°û»ò°©Ï¸°û£¬²¢½«ÆäÏûÃð¡£
¡¡¡¡So when you're sick and you get the chills, the authors say, your body may be trying to tell you to hop under some blankets. Lie down, warm up and send a message. The heat is on.
¡¡¡¡ËùÒÔ£¬µ±ÄãÉú²¡»ò¸Ðµ½º®Àäʱ£¬±íʾÄãµÄÉíÌåÕýÖ±ÏòÄã´«´ïÐÅÏ¢--¹üÌõ̺×Ó¡£ÌÉÔÚ´²Éϰɣ¬ÈÈÆðÀ´£¬ÉíÌå×Ô»á×ö³ö·´Ó¦¡£ÈȶÈÀ´Ï®°¡¡£
¡¾Ó¢ÓïÎÄÕª¡¿Í¼ÎÄÍÆ¼ö
- ÉÏһƪ£ºÓ¢Óï¿Æ¼¼ÎÄÕ´ø·Òë
- ÏÂһƪ£ºÓ¢Óï¿ÆÆÕСÎÄÕÂ