The e-Book
 
 

1,000 IDEAS & ACTIVITIES FOR
LANGUAGE
TEACHERS

See Sample


Home
Donate
E-mail this lesson to
a student /colleague


COPYRIGHT:
Please write to
me for permission.

 

Chemical to Stop Tooth Decay Forever (12th July, 2012)

Scientists in Chile have made a new chemical that makes teeth 'cavity proof'. It could be in use within eighteen months. It could also mean visits to the dentist become a thing of the past. The scientists are calling the chemical 'Keep 32' – after the number of teeth we have in our mouth. In laboratory tests over seven years, 'Keep 32' wiped out all the bacteria that cause cavities in just 60 seconds. It also keeps working to fight the bacteria for several hours. In addition, it could also help fight gum disease.

Advertisements
 
 

The team of scientists has already started trying to interest big American companies into using 'Keep 32'. "We are currently in talks with five [companies] interested in investing in our project or buy our patent," the researchers said. They say their product can be added to toothpaste, mouthwash or chewing gum and other dental care products, which would become 'bacteria busters'. The research team says 'Keep 32' could be added to food. It might even be possible one day to eat candy that does not cause tooth decay.

Advertisements
 
 

PHRASE MATCH

Match the following phrases from the article.

Paragraph 1

1.

Scientists

a.

disease

2

a new chemical that makes teeth 'cavity

b.

fight the bacteria

3.

become a thing

c.

proof'

4.

the number of teeth we

d.

in Chile

5.

It also keeps working to

e.

have in our mouth

6.

help fight gum

f.

of the past

Paragraph 2

1.

trying to interest

a.

talks

2

We are currently in

b.

added to food

3.

interested in investing

c.

decay

4.

other dental

d.

in our project

5.

'Keep 32' could be

e.

big American companies

6.

cause tooth

f.

care products


LISTENING GAP FILL

Scientists in Chile (1) _________________________ chemical that makes teeth 'cavity proof'. It (2) ______________________ within eighteen months. It could also mean visits to the dentist become (3) _________________________. The scientists are calling the chemical 'Keep 32' – after the number of teeth we     (4) _________________________. In laboratory tests over seven years, 'Keep 32' (5) _____________________ bacteria that cause cavities in just 60 seconds. It also keeps working to fight the bacteria for several hours. In addition, it could also        (6) _________________________.

(7) _________________________ has already started trying to interest big American companies into using 'Keep 32'. "We are    (8) _________________________ with five [companies] interested (9) _________________________ project or buy our patent," the researchers said. They say their product can be added to toothpaste, (10) _________________________ gum and other (11) _________________________, which would become 'bacteria busters'. The research team says 'Keep 32' could be added to food. It might even be possible one day to eat candy that does (12) _________________________.


MULTIPLE CHOICE

Scientists in Chile have (1) ____ a new chemical that makes teeth 'cavity proof'. It could be in use (2) ____ eighteen months. It could also mean visits to the dentist become a thing of the (3) ____. The scientists are calling the chemical 'Keep 32' – after the number of teeth we have in our (4) ____. In laboratory tests over seven years, 'Keep 32' wiped out all the bacteria that (5) ____ cavities in just 60 seconds. It also keeps working to fight the bacteria for several hours. In (6) ____, it could also help fight gum disease.

The team of scientists has already started trying to (7) ____ big American companies into using 'Keep 32'. "We are currently (8) ____ talks with five [companies] interested in investing in our project or buy our (9) ____," the researchers said. They say their product can be (10) ____ to toothpaste, mouthwash or chewing gum and other dental (11) ____ products, which would become 'bacteria busters'. The research team says 'Keep 32' could be added to food. It might even be possible one (12) ____ to eat candy that does not cause tooth decay.

Put the correct words from this table into the article.

1.

(a)

made

(b)

making

(c)

makes

2.

(a)

without

(b)

with

(c)

within

3.

(a)

present perfect

(b)

past

(c)

now

4.

(a)

mouth

(b)

gum

(c)

lips

5.

(a)

effect

(b)

case

(c)

cause

6.

(a)

addition

(b)

subtraction

(c)

multiply

7.

(a)

interesting

(b)

interest

(c)

interested

8.

(a)

in

(b)

on

(c)

as

9.

(a)

patient

(b)

parents

(c)

patent

10.

(a)

totaled

(b)

added

(c)

equaled

11.

(a)

careful

(b)

care

(c)

caring

12

(a)

daily

(b)

days

(c)

day


SPELLING

Spell the jumbled words (from the text) correctly.

Paragraph 1

1.

makes teeth 'cavity ofpor'

2.

use twiihn eighteen months

3.

aroobalryt tests

4.

for leervsa hours

5.

In tidaniod

6.

help fight gum asedesi

 

Paragraph 2

7.

trying to sneetrti big American companies

8.

We are uylcnrert in talks

9.

investing in our pcojret

10.

toothpaste, aotwhuhsm or chewing gum

11.

taednl care products

12.

tooth cyade


PUT THE TEXT BACK TOGETHER

Number these lines in the correct order.

(    )

toothpaste, mouthwash or chewing gum and other dental care products, which would become 'bacteria

(    )

The team of scientists has already started trying to interest big American companies into

(    )

of the past. The scientists are calling the chemical 'Keep 32' – after the number of

(    )

teeth we have in our mouth. In laboratory tests over seven years, 'Keep 32' wiped

(    )

busters'. The research team says 'Keep 32' could be added to food. It might

(    )

proof'. It could be in use within eighteen months. It could also mean visits to the dentist become a thing

(    )

even be possible one day to eat candy that does not cause tooth decay.

(    )

using 'Keep 32'. "We are currently in talks with five [companies] interested in investing in

(    )

to fight the bacteria for several hours. In addition, it could also help fight gum disease.

1  )

Scientists in Chile have made a new chemical that makes teeth 'cavity

(    )

out all the bacteria that cause cavities in just 60 seconds. It also keeps working

(    )

our project or buy our patent," the researchers said. They say their product can be added to


THE READING / TAPESCRIPT

With a partner, put the words back into the correct order.

1.

'cavity     chemical     proof'     that     makes     A     teeth     new.     

2.

be     months     in     use     It     within     could     eighteen.    

3.

dentist     become    a     thing     of     the     past     Visits     to     the.    

4.

have     mouth     number     we     our     The     teeth     in     of.    

5.

disease     gum     fight     help     also     could     It.    

6.

scientists     of     team     The     started     already     has.    

7.

to     big     companies     Trying     interest     American.    

8.

be     can     product     Their     toothpaste     to     added.    

9.

care     Chewing     and     dental     products     gum     other

10.

cause     not     does     that     Candy     decay     tooth.    


DISCUSSION (Write your own questions)

STUDENT A's QUESTIONS (Do not show these to student B)

1.

________________________________________________________

2.

________________________________________________________

3.

________________________________________________________

4.

________________________________________________________

5.

________________________________________________________

6.

________________________________________________________

------------------------------------------------------------------------------

STUDENT B's QUESTIONS (Do not show these to student A)

1.

________________________________________________________

2.

________________________________________________________

3.

________________________________________________________

4.

________________________________________________________

5.

________________________________________________________

6.

________________________________________________________


WRITING

Write about teeth for 10 minutes. Show your partner your paper. Correct each other's work.

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________


HOMEWORK

1. VOCABULARY EXTENSION: Choose several of the words from the text. Use a dictionary or Google's search field (or another search engine) to build up more associations / collocations of each word.

2. TEETH: Search the Internet and find more information about tooth decay. Talk about what you discover with your partner(s) in the next lesson.

3. MAGAZINE ARTICLE: Write a magazine article about teeth. Include an imaginary interview with one of the Chilean scientists. Read what you wrote to your classmates in the next lesson. Give each other feedback on your articles.

4. WHAT HAPPENED NEXT? Write a newspaper article about the next stage in this news story. Read what you wrote to your classmates in the next lesson. Give each other feedback on your articles.

5. LETTER: Write a letter to a teeth expert. Ask him/her three questions about teeth. Give him/her three of your opinions on the best way to look after them. Read what you wrote to your classmates in the next lesson. Your partner will answer the questions you asked.

Back to the top
 


 
 
 
 


Copyright © 2012 by Sean Banville | Privacy Policy | | Donate | Links