My 1,000
Ideas
e-Book

Breaking News English

HOME  |   HELP MY SITE  |  000s MORE FREE LESSONS
 
My 1,000
Ideas
e-Book
 
 

HOW TO PLAY:

 1. Click this link to listen.

 2. Listen and choose the correct word in the grey box with the "up / down" arrows.

 3. Check your answers.

 4. Press the "refresh" button on your browser to play again.

   basic      big      changes      chewing      chews      crucial      extent      habits      half      jaws      less      million      mouths      nothing      other      process      shape      simplest      speech      theory  
Eating and food processing skills from around two years ago helped humans to evolve and develop language. Researchers from Harvard University say that learning to cut meat up and using stone tools to process food were steps in our evolutionary . The fact that we cut food up or pounded and crushed it meant we needed time for chewing. This gave our more free time to develop language and communicate. The researchers estimate that cutting up meat and food saved early humans as many as 2.5 million per year. In contrast, the chimpanzee spends of its day chewing, which means it has less time to communicate.

The researchers also said the of our face changed because we needed to chew less. Our and teeth became smaller because we had learnt to cut up food. Professor Daniel Lieberman said: "We went from having snouts and teeth and large muscles to having smaller teeth, smaller chewing muscles, and snoutless faces. Those , and others, allowed for the selection for and other shifts in the head, like bigger brains." Dr Lieberman chewed raw goat meat to test his . He said: "You chew and you chew and you chew and you chew, and happens." He added that to some , slicing meat into smaller pieces before chewing, "is the technology of all".

Back to the lesson page


E-mail this lesson to someone who would like to use it in classroom or study with it. 000's more free lessons.
MORE ACTIVITIES:
QUIZZES MORE QUIZZES PRINT READING SEAN'S OTHER SITES

Sentence Jumble

No letters

Gap-Fill

Word Order

Word Pairs

Grammar Gap-Fill

Articles Gap-Fill

Prepositions Gap-Fill

Consonants

Vowels

Missing Letters

Initals Only

Text Jumble - 15

Text Jumble - 24

No Spaces

 

26-Page Handout

Two-Page Mini-Lesson

 

LISTEN

MP3

Discussion Questions

 

DICTATION

10 Sentences

Spelling (12 Words)

Speed Reading
Activities

 

650+ Discussions (13,000+ Qs)

One-Minute Listening Lessons

Famous People Lessons

Holiday & Anniversary Lessons

Sean Banville on Twitter

My Blog

Free ESL Materials

Business English Materials

Lessons On All American Presidents

Lessons On Movies - Classic & New



 
 


 
 

Copyright © 2004-2019 by Sean Banville | Links | About | Privacy Policy