Photogram

plus minus opposites forces effect energy plus minus minus minus minus minus opposites opposites opposites

18

0

gas fuel energy usage consumption range stove oven burn fire flame propane butane plus minus cut out plus plus minus minus minus minus minus

15

2

tendency curve continents clouds pay plus minus loss profit nature course finance boom direction trading floor economy business speculation financial crisis world economy stock exchange

38

4

battery terminals battery gold terminals battery battery battery battery battery

4

1

calculate calculator math accounting count add plus minus subtract multiply times icon line art cut out calculator calculator math math math math math accounting plus

13

3

plus minus add subtract maths mathematics calculate calculator arithmetics algebra computation plus plus minus minus minus minus minus subtract

30

9

car battery power voltage volts green plus minus battery battery battery battery battery

10

1

pay digits numeric keypad plus minus just through one two three four five six seven eight nine zero template number mathematics

14

2

paper boat paper folded plus minus swim ships course calculation cost weigh up balance sheet plus minus plus minus plus minus plus minus plus minus cost balance sheet balance sheet

40

11

battery alakaline battery battery power positive charge negative charge power source battery battery battery battery battery

16

2