In our last science lesson, we read about parts of our bodies. What is one part of our bodies we read about? bones, organs, muscles, blood, nerves

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1 Scinc 1 Physical Lif Earth and Spac LESSON 49 Idntifying th function of th skltal systm Idntifying bons in th skltal systm Lsson Prparation Program Matrials Lsson Chart 49 Scinc Word Wall cards (s inst) Childrn s Booklt E Discovring What Is Insid Our Bodis (pp. 4 5) Lsson Rviw 49 Tachr Collctd Matrials Rd, grn, purpl, blu, and orang colord pncils (1 ach pr child) Rd, grn, purpl, blu, and orang markrs Scinc Word Wall bons sklton cranium mandibl ribs spin fmur Th Lsson Post Lsson Chart 49. In our last scinc lsson, w rad about parts of our bodis. What is on part of our bodis w rad about? bons, organs, muscls, blood, nrvs Rpat until all parts ar namd. Today you will larn mor about th bons in your body. Show childrn th word card bons. Lt s rad this word togthr. All of th bons in your body mak up your sklton. Show childrn th word card sklton. Lt s rad this word togthr. Distribut th childrn s booklts Discovring What Is Insid Our Bodis and colord pncils. Nancy Larson. All rights rsrvd. Nancy Larson Publishrs, Inc. S1(1)-LB-049

2 Scinc 1, Lsson 49 Tak out your rd, grn, purpl, blu, and orang colord pncils. Opn your booklt to pag 4. Point to th words in th titl as w rad it togthr. Rad th titl Your Sklton with th childrn. Look at th pictur on pag 5. This pictur shows th bons in a human body. Lt s f nd out how many bons you hav in your body and what your bons do. Point to th numbr 1 on pag 4. Now point to th words as I rad paragraph 1. Rad th following to th childrn as thy follow along. You hav 206 bons in your body. Ths bons mak up your sklton. Your bons allow you to stand. Your bons also protct th organs insid your body. How many bons do you hav in your body? 206 What do your bons do? allow you to stand, protct your organs Do you hav bons in your had? ys Lt s rad and f nd out about ths bons. Point to th numbr 2. Now point to th words as I rad paragraph 2. Rad th following to th childrn as thy follow along. Th bons in your had mak up your skull. Th bons in your skull that protct your brain ar calld th cranium (krā-'nē- m). Th bon in your skull that movs whn you talk and chw food is calld th mandibl (măn'd -b l). What ar all th bons in your had calld? skull What ar th bons in your skull that protct your brain calld? cranium Tachr Not: Thr ar 22 bons in th skull. Eight of th bons mak up th cranium, and 14 ar th facial bons. On of th facial bons is th mandibl. All bons in th skull ar linkd by fixd joints xcpt th mandibl. Fl th bons in your cranium. Show th childrn th word card cranium. 2 Nancy Larson. All rights rsrvd.

3 Scinc 1, Lsson 49 Point to th boldfacd word cranium in paragraph 2. Us your rd colord pncil to circl th word cranium. Circulat and chck th childrn s booklts. Look at th pictur of th sklton on pag 5. Point to th cranium in this pictur. Circulat and chck to s whr childrn ar pointing. I am going to writ on my chart th word cranium on th lin pointing to th cranium. Would somon lik to spll th word cranium whil I writ th word on th lin pointing to th cranium? Ask a child to spll cranium. Us a rd markr to writ th word cranium on Lsson Chart 49. Us your rd colord pncil to writ th word cranium on th lin pointing to th cranium. Circulat and assist childrn as thy do this. Which bon hlps you talk and chw? mandibl Whr is your mandibl? Fl your mandibl. Show childrn th word card mandibl. Point to th boldfacd word mandibl in paragraph 2 on pag 4. Us your grn colord pncil to circl th word mandibl. Circulat and chck th childrn s booklts. Look at th pictur of th sklton on pag 5. Point to th mandibl in th pictur. Circulat and chck to s whr childrn ar pointing. Would somon lik to spll th word mandibl whil I writ th word on th lin pointing to th mandibl? Ask a child to spll mandibl. Us a grn markr to writ th word mandibl on th lsson chart. Nancy Larson. All rights rsrvd. 3

4 Scinc 1, Lsson 49 Us your grn colord pncil to writ th word mandibl on th lin pointing to th mandibl. Do you hav bons in your chst and back? ys Lt s rad and f nd out. Point to th numbr 3. Now point to th words as I rad paragraph 3 on pag 4. Rad th following to th childrn as thy follow along. Th bons you fl in your chst ar calld ribs. Your ribs protct your hart and lungs. What ar th bons in your chst calld? ribs Whr ar your ribs? in your chst Fl your ribs. You can also fl your ribs on th sids of your chst and in your back. S if you can fl your ribs thr. Tachr Not: A small prcntag of humans hav an xtra rib for a total of 207 bons. An infant has about 300 bons at birth. As a child grows up, 94 of ths bons fus with othr bons. Show childrn th word card ribs. Point to th boldfacd word ribs in paragraph 3. Us your purpl colord pncil to circl th word ribs. Circulat and chck th childrn s booklts. Look at th pictur of th sklton on pag 5. Point to th ribs in this pictur. Circulat and chck to s whr childrn ar pointing. Would somon lik to spll th word ribs whil I writ th word on th lin pointing to th ribs? Ask a child to spll ribs. Us a purpl markr to writ th word ribs on th lsson chart. Us your purpl colord pncil to writ th word ribs on th lin pointing to th ribs. Circulat and assist childrn as thy do this. 4 Nancy Larson. All rights rsrvd.

5 Scinc 1, Lsson 49 What do your ribs do? protct your hart and lungs You hav bons down th cntr of your back calld your spin. Lt s rad about our spins. Point to th numbr 4 on pag 4. Now point to th words as I rad paragraph 4. Rad th following to th childrn as thy follow along. Th bons down th cntr of your back mak up your spin. Your spin supports your body. Each bon in your spin is calld a vrtbra (vûr't -br ). Thr ar 33 vrtbra (vûr't -brā') in your spin. Your spin starts at your nck and gos down th middl of your back. Bnd ovr and fl th bons in your spin. Tachr Not: Som scinc rfrnc matrials rfr to th spin as having 24 or 26 vrtbra instad of 33. Th 9 sacral and coccygal bons ar vrtbra and ar distinguishd individually vn if fusd. Som scintists do not count ths bons as vrtbra aftr thy ar fusd. Show childrn th word card spin. Point to th boldfacd word spin in paragraph 4. Us your blu colord pncil to circl th word spin. Circulat and chck th childrn s booklts. Look at th pictur of th sklton on pag 5. Put your f ngr on th lin pointing to th spin in th pictur. Circulat and chck to s whr childrn ar pointing. Th arrow is pointing to on vrtbra in th spin. Would somon lik to spll th word spin whil I writ th word on th lin? Ask a child to spll spin. Us a blu markr to writ th word spin on th lsson chart. Us your blu colord pncil to writ th word spin on th lin pointing to th spin. Circulat and assist childrn as thy do this. Whr do you think th smallst and largst bons in your body ar? Nancy Larson. All rights rsrvd. 5

6 Scinc 1, Lsson 49 Lt s rad and f nd out. Point to th numbr 5 on pag 4. Now point to th words as I rad paragraph 5. Rad th following to th childrn as thy follow along. Som bons in your sklton ar larg and othrs ar small. Th largst bon in your body is in your uppr lg. It is calld th fmur (f ē'm r). Th smallst bon in your body is in your ar. It is calld th staps (st ā'p ēz). Whr is th smallst bon in your body? in th ar What is it calld? staps You can t fl your staps bcaus it is insid your skull. Whr is th largst bon in your body? in th uppr lg What is it calld? fmur Fl your fmur. Show childrn th word card fmur. Point to th boldfacd word fmur in paragraph 5. Us your orang colord pncil to circl th word fmur. Circulat and chck th childrn s booklts. Look at th pictur of th sklton on pag 5. Point to th fmur in this pictur. Circulat and chck to s whr childrn ar pointing. Would somon lik to spll th word fmur whil I writ th word on th lin pointing to th fmur? Ask a child to spll fmur. Us an orang markr to writ th word fmur on th lsson chart. Us your orang colord pncil to writ th word fmur on th lin pointing to th fmur. Circulat and assist childrn as thy do this. Who would lik to shar somthing you larnd in scinc today? Allow tim for th childrn to shar. 6 Nancy Larson. All rights rsrvd.

7 Scinc 1, Lsson 49 In our nxt scinc lsson, w will larn how our bons ar joind togthr. Collct th childrn s booklts and colord pncils. Post th word cards bons, sklton, cranium, mandibl, ribs, spin, and fmur on th Scinc Word Wall. Lsson Rviw Not: Lsson rviws may b compltd on th sam day a lsson is taught or on th following day. If th lsson rviw is compltd on th following day, rrad pag 4 in Discovring What Is Insid Our Bodis to th childrn. Distribut Lsson Rviw 49. Rad th dirctions and qustions on at a tim to th childrn, allowing tim for th childrn to answr ach qustion bfor continuing. Circulat and assist childrn as thy work. Collct th childrn s paprs. Rcord on th Lsson Rviw Rcording Form th compltion of th lsson rviw. Rturn th paprs to th childrn to tak hom or stor in a scinc foldr. Nam Answr Ky Lsson Rviw 49 Scinc 1 Lsson 49 Your Sklton Fill in th circl nxt to th corrct answr. 1. How many bons ar in th human body? A 100 B 206 C What do w call all th bons togthr in th human body? A sklton B fingrs C tos Us a word from th Word Box to complt ach sntnc. spin fmur cranium 3. Thr ar 33 vrtbra in your spin 4. Th bons in your skull that protct your brain ar calld th cranium.. 5. Th largst bon in your body is in your uppr lg and is calld th fmur. Nancy Larson. All rights rsrvd. Nancy Larson Publishrs, Inc. S1(1)-LR-049 Nancy Larson. All rights rsrvd. 7