Buku Sains 4 Kelas 4 SD

Materi Sains 4

KATA SAMBUTAN .......................................................................................................... iii
KATA PENGANTAR ........................................................................................................ i v
DAFTAR ISI .................................................................................................................... v
SEMESTER 1

BAB 1 RANGKA DAN PANCA INDRA MANUSIA...................................................... 3
A. Rangka Manusia dan Fungsinya .............................................................. 5
B. Indra dan Fungsinya ................................................................................. 11
Refleksi.......................................................................................................... 19
Tugas Proyek Sains ...................................................................................... 19
Wacana Salingtemas..................................................................................... 20
Ingat Kembali ................................................................................................. 20
Ayo Kerjakan.................................................................................................. 21

BAB 2 STRUKTUR DAN FUNGSI BAGIAN TUMBUHAN ....................................... 25
a. Bagian Tumbuhan dan Kegunaannya ...................................................... 27
b. Persamaan dan Perbedaan Tumbuhan Monokotil dan Dikotil .................. 33
Refleksi.......................................................................................................... 35
Tugas Proyek Sains ...................................................................................... 35
Wacana Salingtemas..................................................................................... 35
Ingat Kembali ................................................................................................. 36
Ayo Kerjakan.................................................................................................. 36

BAB 3 PENGELOMPOKAN HEWAN BERDASARKAN JENIS MAKANAN ............. 39
A. Jenis-jenis Makanan Hewan ..................................................................... 41
B. Mengelompokan Hewan Berdasarkan Jenis Makanannya....................... 43
Refleksi.......................................................................................................... 45
Tugas Proyek Sains ...................................................................................... 45
Wacana Salingtemas..................................................................................... 46
Ingat Kembali ................................................................................................. 46
Ayo Kerjakan.................................................................................................. 47

BAB 4 DAUR HIDUP HEWAN ................................................................................... 51
A. Daur Hidup Beberapa Hewan .................................................................. 53
B. Kepedulian Terhadap Hewan Peliharaan ................................................. 59
Refleksi.......................................................................................................... 62
Tugas Proyek Sains ...................................................................................... 62
Wacana Salingtemas..................................................................................... 62
Ingat Kembali ................................................................................................. 63
Ayo Kerjakan.................................................................................................. 64

BAB 5 HUBUNGAN MAKHLUK HIDUP DENGAN LINGKUNGANNYA ................. 67
A. Beberapa Jenis Hubungan Antarmakhluk Hidup ...................................... 69
B. Hubungan antara Makhluk Hidup dan Lingkungannya.............................. 71
C. Mata Rantai.............................................................................................. 73
D. Perubahan Lingkungan............................................................................ 74
Refleksi.......................................................................................................... 77
Tugas Proyek Sains ...................................................................................... 77
Wacana Salingtemas..................................................................................... 77
Ingat Kembali ................................................................................................. 78
Ayo Kerjakan.................................................................................................. 78

BAB 6 BENDA DAN SIFATNYA ................................................................................. 81
A. Sifat Berbagai Wujud Benda .................................................................... 83
B. Berbagai Perubahan Wujud Benda .......................................................... 90
C. Hubungan antara Sifat Benda dan Kegunaannya .................................... 91
Refleksi.......................................................................................................... 93
Tugas Proyek Sains ...................................................................................... 93
Wacana Salingtemas..................................................................................... 94
Ingat Kembali ................................................................................................. 94
Ayo Kerjakan.................................................................................................. 95
AYO KERJAKAN SEMESTER 1 ................................................................................... 98

SEMESTER 2
BAB 7 GAYA ............................................................................................................. 105
A. Gaya Memengaruhi Gerak Suatu Benda .................................................. 107
B. Gaya Memengaruhi Bentuk Suatu Benda ................................................ 110
Refleksi.......................................................................................................... 111
Tugas Proyek Sains ...................................................................................... 111
Wacana Salingtemas..................................................................................... 111
Ingat Kembali ................................................................................................. 112
Ayo Kerjakan.................................................................................................. 112

BAB 8 ENERGI DAN PENGGUNAANNYA ............................................................... 115
A. Energi Panas dan Sifatnya ....................................................................... 117
B. Energi Bunyi dan Sifatnya ........................................................................ 120
C. Energi Alternatif dan Penggunaannya dalam Kehidupan Sehari-hari ....... 124
D. Membuat Karya dengan Menerapkan Konsep Perubahan Energi Gerak . 127
E. Membuat Karya dengan Menerapkan Konsep Bunyi ................................ 129
Refleksi.......................................................................................................... 130
Tugas Proyek Sains ...................................................................................... 131
Wacana Salingtemas..................................................................................... 131
Ingat Kembali ................................................................................................. 131
Ayo Kerjakan.................................................................................................. 132

BAB 9 PERUBAHAN PENAMPAKAN BUMI DAN BENDA LANGIT ........................ 135
A. Perubahan Kenampakan Bumi ................................................................ 137
B. Perubahan Kenampakan Benda-benda Langit ........................................ 139
Refleksi.......................................................................................................... 140
Tugas Proyek Sains ...................................................................................... 140
Wacana Salingtemas..................................................................................... 141
Ingat Kembali ................................................................................................. 141
Ayo Kerjakan.................................................................................................. 142

BAB 10 PERUBAHAN LINGKUNGAN ........................................................................ 145
A. Berbagai Penyebab Perubahan Lingkungan Secara Fisik ....................... 147
B. Pencegahan Kerusakan Lingkungan ....................................................... 150
Refleksi.......................................................................................................... 151
Tugas Proyek Sains ...................................................................................... 151
Wacana Salingtemas..................................................................................... 152
Ingat Kembali ................................................................................................. 152
Ayo Kerjakan.................................................................................................. 153

BAB 11 SUMBER DAYA ALAM.................................................................................... 155
A. Hubungan antara Sumber Daya Alam dan Lingkungannya ...................... 157
B. Hubungan antara Sumber Daya Alam dan Teknologi yang Digunakan .... 161
C. Dampak Penggunaan Bahan Alam Terhadap Pelestarian Lingkungan .... 162
Refleksi.......................................................................................................... 163
Tugas Proyek Sains ...................................................................................... 163
Wacana Salingtemas..................................................................................... 163
Ingat Kembali ................................................................................................. 164
Ayo Kerjakan.................................................................................................. 165
LATIHAN ULANGAN SEMESTER 2 .............................................................................. 167

GLOSARIUM.................................................................................................................. 172
DAFTAR PUSTAKA ........................................................................................................ 176
KUNCI JAWABAN........................................................................................................... 177
Daftar Isi vii