Workbook
Workbook 1 Answer Key 1
Answer Key1
Unit 11 1 question 2 answer
2 1 question 2 answer
3 a ✗ b ✓
Lesson 1
1 1 c 2 a 3 b
2 3
3 1 d 2 c 3 a 4 b
4 Students’ own answers
Lesson 2
1 Students should tick all five boxes.
2 green
3 Students’ own answers
4 1 hand lens 2 ruler 3 balance 4 safety goggles
5 ruler ✓ safety goggles ✗ balance ✓ hand lens ✗
6 1 different 2 alike 3 different 4 alike
7 Students’ own answers
8 Students’ own answers
Lesson 3
1 data
2 1 c 2 d 3 a 4 b
3 number
4 1 four 2 eight 3 two 4 six
5 Students’ own answers
Unit 21 1 b 2 a 3 b
2 1 b 2 c 3 a
Lesson 1
1 1 b 2 a 3 a
2 solve; Students’ own drawings
Lesson 2
1 problem, idea
2 1 No 2 No 3 Yes
3 1 c 2 a 3 b
4 1 ✓ 2 ✓ 3 ✓ 4 ✗ 5 ✓ 6 ✗
5 1 1 2 3 3 2
6 Students should color toy box 2.
7 Students’ own answers
8 1 c 2 a 3 b
9 Students’ own answers
Lesson 3
1 test, Test
2 1
3 1 a ✗ b ✓ 2 a ✗ b ✓
4 a 2 b 3 c 1
Workbook
Workbook 1 Answer Key 2
Answer Key1
Unit 31 plants, animals
2 plants: a, b, d animals: c, e, f
3 1 is 2 is 3 are
4 living: 1, 4, 6nonliving: 2, 3, 5
5 1 F 2 T
6 Students’ own answers
Lesson 1
1 duckling ➞ young duck ➞ adult duck
2 1 Yes 2 Yes 3 No 4 No
3 2, 4, 5
4 Students’ own answers
5 a 2 b 4 c 3 d 1
6 1 ✓ 2 ✗ 3 ✓
7 Student’s own answers.
Lesson 2
1 fur: afeathers: cfins: cpaws: b
2 Students’ own answers
Lesson 3
1 Animals can have babies. 2Plants can make seeds. 1
2 a 2 b 1 c 4 d 3
3 1 b 2 a 3 b
4 Flowers 1 and 3: yellowFlowers 2 and 4: red
Review 1–31 1 c 2 a 3 b
2
3 problem, solution, design, idea, test
4 1 3 2 4
5 1 b 2 a 3 c 4 d
Unit 4 1 1 parents 2 baby
2 1 adult donkey 2 adult hen
3 1 F 2 F 3 T
Lesson 1
1 1 c 2 d 3 b 4 a
2 Students’ own answers
3 a 2 b 3 c 1
4 1 b 2 c 3 a
5 1 hatch 2 hatch 3 Fish 4 hatch
6 1 Yes 2 No 3 No
7 It's a small fish. 2It's a big fish. 1
8 Students’ own answers
Workbook
Workbook 1 Answer Key 3
Answer Key1
Lesson 2
1 adult
2 1 have 2 adults 3 babies
3 Students’ own answers
4 1 F 2 T 3 T 4 T
5 a 2 b 4 c 1 d 3
6 Students’ own answers
Lesson 3
1 1 b, apple 2 c, sunflower 3 a, tomato
2
3 It’s a seedling. 2It’s a fruit with seeds. 4It’s a flower. 1It’s an adult plant. 3
4 1 T 2 F 3 T 4 F
5 Students’ own answers
Unit 51 1 one 2 one 3 two 4 two
2 nine
3 Students’ own answers
Lesson 1
1 1 see 2 hear 3 touch 4 smell 5 taste
2 1 colors ✓ 2 flavors ✗ 3 shapes ✓
3 Students should color the balloons the correct colors.
4 Students’ own answers
5 1 T 2 F
6 1, 2, 4
7 Students’ own answers
8 skin
9 1 smooth 2 hot 3 rough 4 cold
10 Students’ own answers
11 1 good 2 bad 3 bad 4 good
12 tongue
sweet ✓ ✗ ✗ ✗ ✓ ✗
salty ✗ ✓ ✗ ✓ ✗ ✗
sour ✗ ✗ ✓ ✗ ✗ ✓
Lesson 2
1 1 ✓ 2 ✗ 3 ✓ 4 ✓ 5 ✓ 6 ✗ 7 ✗
2 1 food 2 healthy 3 energy 4 Sleep
3 shelter
4 1 Jen 2 David 3 Tom 4 Maria
5 1 He’s 2 She’s
6 Students’ own answers
Workbook
Workbook 1 Answer Key 4
Answer Key1
Unit 61 sky, land, water
2 1 night 2 day
3 Students’ own answers
Lesson 1
1 Students should tick the bird, the cloud, and the sun.
2 1 is 2 These 3 This 4 are
3
lake
hill
valley
swamp
ocean
water ✓ ✗ ✗ ✓ ✓
land ✗ ✓ ✓ ✗ ✗
4 mountain, ocean, lake, river
5 Students’ own answers
6 1 T 2 F 3 F 4 T
7 1 on land: horse, kangaroo, dog, squirrel 2 in water: yellow fish, orange and blue fish, octopus, dolphin
8 Students’ own answers
Lesson 2
1 Students’ own answers
2 1 morning 2 noon 3 evening
3 1 low 2 high 3 low
4 Students should color pictures 1 and 2.
5 1 ✓ 2 ✗ 3 ✓ 4 ✗
Lesson 3
1 1 b 2 c 3 a
2 a 2 b 3 c 4 d 1
3 1 fall 2 spring 3 winter 4 summer
4 4
5 Students’ own answers
Review 4–61 1 d 2 c 3 a 4 b
2
2
34
5
6
1
3 1 see 2 hear 3 touch 4 taste 5 smell
4 1 b 2 c 3 a
5 star
Workbook
Workbook 1 Answer Key 5
Answer Key1
Unit 7 1 Students should color the circles green, the triangles
blue, and the rectangles red.
2 1 plastic 2 paper 3 paper 4 glass 5 plastic
Lesson 1
1 1 light 2 light 3 heavy 4 light 5 heavy
2 1 ✓ 2 ✗ 3 ✗ 4 ✓
3 smooth
4 1 glass 2 metal 3 plastic 4 wood 5 plastic 6 metal
5 Students’ own answers
6 1 glass 2 plastic 3 metal 4 wood
7 1 No, it isn’t. 2 Yes, it is.
Lesson 2
1 1 ✓ 2 ✗
2 color
3 1 plastic 2 wood
4 1 big/small 2 small/big
Lesson 3
1 1 wood 2 glass 3 metal 4 clay
2
We can see through it. ✗ ✓ ✗ ✗
It’s warm. ✗ ✗ ✗ ✗
It’s sticky. ✗ ✗ ✓ ✗
It's strong. ✓ ✗ ✗ ✗
3 1 c 2 a 3 d 4 b
4 metal, wood, glass
5 Students’ own drawings
Unit 8 1 1 ✓ 2 ✓ 3 ✓ 4 ✓ 5 ✗ 6 ✗
2 Students’ own answers
Lesson 1
1 1 ✓ 2 ✗ 3 ✓ 4 ✗ 5 ✓ 6 ✓
2 1 T 2 T 3 T 4 F
3 Students’ own answers
4 Kind of matter
solid ✓ ✗ ✗ ✓
liquid ✗ ✓ ✓ ✗
5 1 Yes 2 No 3 No 4 Yes
6 1, 3, 4
7 1 F 2 F 3 T 4 F
8 gas
Lesson 2
1 The ice is a solid. 2The water is a liquid. 1
2 1 b 2 d 3 a 4 c
3 1 solid 2 warm 3 melting 4 liquid
4 1 liquid 2 boils 3 gas 4 air
5 1 c 2 a 3 b
6 Students’ own answers
Workbook
Workbook 1 Answer Key 6
Answer Key1
Lesson 3
1 1 ✓ 2 ✗ 3 ✓ 4 ✗
2 It is a mixture of solids. 3It is a mixture of solids and a liquid. 1It is not a mixture. 2
3 solids, liquid
4 solids, liquid
5 Students’ own answers
Unit 9 1 four
2
a clock
a lamp
a ball
a plant
3 1 ✓ 2 ✗ 3 ✓ 4 ✗ 5 ✓
4 1, 2, 3
Lesson 1
1 1 on 2 next to 3 next to 4 on
2 1 ✓ 2 ✗
3 1 above 2 below 3 next to
4 Students’ own answers
Lesson 2
1 1 push 2 pull 3 push 4 pull 5 pull 6 pull
2 1 hands 2 feet 3 head
3 1 c 2 d 3 a 4 b
4 1 toward 2 away from 3 toward 4 away from
5 1 fast 2 slow 3 small 4 big
6 Students’ own answers
Lesson 3
1 1 attract 2 toward 3 push 4 magnets
2 1 attract 2 don’t attract 3 don’t attract 4 attract
3 Students should draw the screw touching the silver parts of the magnet.
Review 7–91 1 glass 2 metal 3 plastic 4 clay 5 wool
6 wood
2 1 b 2 c 3 a
3 b
4 1 b 2 a 3 f 4 c 5 d 6 e
5
Workbook
Workbook 1 Answer Key 7
Answer Key1
Writing SkillsUnit 1two
Unit 2test
Unit 3Students should color the snail.
Unit 4
Unit 5two
Unit 6Students should label water and land correctly.
Unit 7Yes, it is.
Unit 8Students’ own answers
Unit 9in front of
Reading SkillsUnit 11 one 2 two 3 three 4 four 5 five 6 six 7 seven 8 eight 9 nine 10 ten
Unit 2Yes
Unit 3T
Unit 4frog
Unit 5Students’ own answers
Unit 61 ✓ 2 ✗
Unit 7
It comes from sheep. ✗ ✗ ✓
It’s strong. ✓ ✗ ✗
It’s sticky. ✗ ✓ ✗
Unit 81 b 2 a
Unit 9on