初中英语北师大版八年级上册Lesson 12 Healthy Bones多媒体教学课件ppt

这是一份初中英语北师大版八年级上册Lesson 12 Healthy Bones多媒体教学课件ppt，共41页。PPT课件主要包含了Free Talk，New Words等内容，欢迎下载使用。

D yu knw anything abut bnes?
Lessn 12 Healthy Bnes
Bnes are hard n the utside, but they are sft n the inside.
Bnes are imprtant because they can make bld. Bld carries nutrients thrugh ur bdies.
We need calcium, because it can make ur bnes slid.
Hw can we keep ur bnes healthy?
The smallest bne in ur bdy is in ur head.A twenty-year-ld man has mre bnes than a baby.Our bnes stp grwing when we are 21-25.
Read the fllwing sentences. Which ne is false?
The smallest bne in ur bdy is in ur head.
Check the answers.
The smallest bne in the bdy is in yur ear and is called the stirrup bne (stapes) .
2. A twenty-year-ld man has mre bnes than a baby.
Adults have less bnes than babies because sme f their bnes fuse tgether t frm ne bne when they grw up.
3. Our bnes stp grwing when we are 21-25.
Wmen’s bnes stp grwing arund the age f 20, while men’s stp arund 25.
Lk at the pictures and skim the text. Chse the best title.
Paragraph 1
Read the text.
Every time we walk, sit dwn r hld a bk, we are using ur bnes. Bnes are imprtant because they supprt ur bdies and help us mve freely. Althugh they are very light, bnes are strng enugh t supprt ur weight.
Bnes are hard n the utside, but they are sft n the inside. The sft part f the bne makes ur bld. Bld carries nutrients thrugh ur bdies. It als helps mve waste materials away s ur bdies can stay healthy.
Paragraph 2
Calcium makes ur bnes slid, s we need t get enugh f it each day. We can get calcium easily frm milk, sme vegetables and ther fds.
Paragraph 3
Paragraph 4
Vitamin D is als imprtant because it helps calcium wrk well in ur bdies. Althugh we get vitamin D frm fd like fish and eggs, we can als get it frm the sun! Try t get a bit f sun every day s yu can have healthier bnes!
Paragraph 5
Exercise imprves ur bne health t, s make it a habit. Running, jumping and dancing are all gd exercise, but even daily activities like walking and climbing stairs can help keep ur bnes healthy and strng!
Skim the key sentences f each paragraph.
Bnes are imprtant …Bnes are hard n the utside, but …Calcium makes ur bnes slid, … Vitamin D is als imprtant …Exercise imprves ur bne health t, …
Read the text again and answer the fllwing questins.
1. Are bnes weak?2. Are bnes hard n the inside?3. What d bnes make?4. Why is bld imprtant?5. What can we d t keep ur bnes healthy?
Are bnes weak?
N, they are strng.
2. Are bnes hard n the inside?
N, bnes are sft n the inside.
3. What d bnes make?
The sft part f the bne makes ur bld.
4. Why is bld imprtant?
Bld carries nutrients thrugh ur bdies and it als helps mve waste materials away.
Paragraph 2… Bld carries nutrients thrugh ur bdies. It als helps mve waste materials away s ur bdies can stay healthy.
5. What can we d t keep ur bnes healthy?
We shuld get enugh calcium and vitamin D, and we shuld exercise daily.
Paragraph 3: Calcium makes ur bnes slid, … Paragraph 4: Vitamin D is als imprtant …Paragraph 5: Exercise imprves ur bne health t, …
Read the text alud.
What will yu d t keep yur bnes healthy?
e.g. I will drink milk every day and d sme exercise every week.