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3. Purchases Making Purchases Special Offer : Every time you buy 4 or more presentations (in a single basket) the cheapest will be free. Buy 8  get 2 free, buy 12  get 3 free etc. You will be able to monitor the discount as you place the presentations in your basket. Your purchased presentations will appear in your account instantly. Please note that when paying by credit card you must press the “RETURN TO MERCHANT” button on the final PayPal screen showing your receipt for payment. If this button is not pressed then you will experience a delay in the presentations being placed in your account. Further Information FREE MONTHLY PRESENTATION: A free presentation will be added to your account at some point during each calendar month. HOME PAGE: More free stuff/sample material at bottom of page. ORDER FORMS: Catalogues can also be found here showing some screen shots. Hints and Tips Printable Worksheets: Always choose “Slide Outline” (top left) before running a presentation to view slide titles and to check for printable worksheets. Editing Presentations: All presentations are normally quite easy to edit (particularly text). It is also straightforward to insert your own slides.

4. Thermometer Read the temperature on the thermometer as it changes. 0 -10 -20 -30 10 20 30 40 50 60 oCoC

5. 0 -10 -20 -30 10 20 30 40 50 60 oCoC Read the temperature on the thermometer as it changes. 20 0 C

6. 0 -10 -20 -30 10 20 30 40 50 60 oCoC Read the temperature on the thermometer as it changes. 50 0 C

7. 0 -10 -20 -30 10 20 30 40 50 60 oCoC Read the temperature on the thermometer as it changes. 25 0 C

8. 0 -10 -20 -30 10 20 30 40 50 60 oCoC Read the temperature on the thermometer as it changes. 00C00C

9. 0 -10 -20 -30 10 20 30 40 50 60 oCoC Read the temperature on the thermometer as it changes. -10 0 C

10. 0 -10 -20 -30 10 20 30 40 50 60 oCoC Read the temperature on the thermometer as it changes. -5 0 C

11. 0 -10 -20 -30 10 20 30 40 50 60 oCoC Read the temperature on the thermometer as it changes. -20 0 C

12. 0 -10 -20 -30 10 20 30 40 50 60 oCoC Read the temperature on the thermometer as it changes. -15 0 C

13. 0 -10 -20 -30 10 20 30 40 50 60 oCoC Read the temperature on the thermometer as it changes. -25 0 C

14. Difference What is the difference in temperature between the two thermometers? 40 degrees 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC

15. What is the difference in temperature between the two thermometers? 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 15 degrees

16. What is the difference in temperature between the two thermometers? 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 30 degrees

17. What is the difference in temperature between the two thermometers? 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 30 degrees

18. What is the difference in temperature between the two thermometers? 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 65 degrees

19. What is the difference in temperature between the two thermometers? 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 10 degrees

20. What is the difference in temperature between the two thermometers? 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 20 degrees

21. What is the difference in temperature between the two thermometers? 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 15 degrees

22. What is the difference in temperature between the two thermometers? 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 10 degrees

23. What is the difference in temperature between the two thermometers? 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 20 degrees

24. What is the difference in temperature between the two thermometers? 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 70 degrees

25. Sea level 0m 10m 20m 30m -10m -20m -30m Estimate the height above or below sea level of the following points: 15m -10m 5 m 20 m 6 m -15 m -25 m -30 m 25 m -5 m 30 m -25 m

26. 50m -20m -40m -60m 0m 20m 40m 60m -10m 40m 50m -10m -5m -30m - 40m - 25m - 60m Estimate the height above or below sea level of the following points: 57m 15m

27. Calculate the difference in height between the following: 15m -10m 5 m 20 m 6 m -15 m -25 m -30 m 25 m -5 m 30 m -25 m The helicopter and the lighthouse: 15m The dolphin and the seal: 10m The hot air balloon and the lobster: 30m The boat and the fish. 21m The flock of birds and the sea horse. 50m 30m The dolphin and the jelly fish.The lobster and the anchor. 20m The jelly fish and the sea horse. 0m The helicopter and the anchor. 60m

28. 50m -10m 40m 50m -10m -5m -30m 15m - 40m - 25m - 60m 57m Calculate the difference in height between the following:The hang glider and the aeroplane: The kite and the seagull:The kite and the diver:The hot air balloon and the octopus.The seagull and the nautilus.The diver and the octopus.The turtle and the submarine. The pearl and the submarine. The diver and the sextant. 17m 35m55m60m 40m 5m 30m 10m 55m The hot air balloon and the pearl. 80m The hang glider and the sextant. 117m

29. Number Line Negative Numbers on the Number Line 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 Negative numbers are useful for representing quantities that can have values below zero. Examples include temperature, debt and heights below sea level. The part of the number line that consists of the positive and negative whole numbers, together with zero, are called the integers. To add numbers on a number line simply count to the right. 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 ADD + Subtract - To subtract numbers on a number line simply count to the left.

30. 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 Adding + 2 + 5 = 7 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 0 + 6 =6 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 -3 + 7 =4 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 -5 + 5 =0 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 - 4 + 7 =3 Negative Numbers on the Number Line

31. 2 - 1 + 3 =1- 4 + 5 =2- 6 + 9 =3- 7 + 12 =4- 6 + 10 =5- 8 + 8 =6- 9 + 6 =7- 5 + 4 =8- 10 + 20 =9- 15 + 8 =10 1 3 5 4 0 -3 10 -7 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 Adding + You may use the number line if you wish, to answer the following: Negative Numbers on the Number Line

32. 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 Subtracting - 7 - 5 = 2 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 6 - 6 =0 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 4 - 7 =-3 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 0 - 5 =-5 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 - 2 – 7 =-9 Negative Numbers on the Number Line

33. 01 234 5 6 7 8 9 10 -2 -3 -4 -5 -6 -7 -8 -9 -10 Subtracting - You may use the number line if you wish, to answer the following: 4 7 - 3 =14 - 4 =23 - 5 =31 - 8 =40 - 6 =5- 1 - 1 =6- 2 - 3 =7- 5 - 3 =8- 7 - 3 =9- 3 - 12 =10 0 - 2 - 7 - 6 -2 -5 -8 -10 -15 Negative Numbers on the Number Line

34. Blank Scale 1 0m m m m m m m Estimate the height above or below sea level of the following points: m m m m m m m m m m m m

35. Blank Scale 2 Estimate the height above or below sea level of the following points: m m m m 0m m m m m m m m m m m m m m m

36. Blank difference 1 m m m m m m m m m m m m

37. Blank difference 2 m m m m m m m m m m m m

38. Blan k Ther mo met er 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC 0 -10 -20 -30 10 20 30 40 50 60 oCoC