Chapter 4 LONG AND SHORT Measuring of shorter

Chapter 4 LONG AND SHORT

Measuring of shorter objects. Akshita bought a new pencil and she want to know how long is her pencil ? The length of the pencil is 14 centimetres. We use the centimetre ( cm )scale to measure the shorter objects.

Measuring of longer objects. A tailor uses measuring tape to measure cloths. Longer and taller objects are measured in metres. ( Trees, Buildings, Bridges, etc ) 100 centimetres = 1 metre.

Measuring of longer distances. Distance between Anusree’s house and her school is 2 km. KV KALPETTA 2 KM Longer distances are measured in kilometers 1000 metres = 1 kilometre.

Centimetres or Metres ? Which of the following will be measured in centimetres and which of them in metres ? Height of a Giraffe Metres Width of the computer screen Centimetres Depth of a well Metres Length of a lady bug Centimetres Length of the race track Metres

Height of lamp post 5 m Length of chick 23 cm Height of Mount Everest 6 cm Length of sari 3 m Length of brick 8. 8 Km

Green Forest Factory Railway Line Blue River Residential Area Railway Station Museum Market Bus Stand National Highway Railway station to Bus Stand – 3 Km ; Bus Stand to Museum – 5 Km; Bus Stand to Market – 2 Km; Bus Stand to Kendriya Vidyalaya - 2 Km ; Bus Stand to residential Area 2 Km; Residential Area to Factory 4 Km. Now find from the map : Which is farther from Railway Station – ❖ Kendriya Vidyalaya or Museum ? ❖ Residential Area or Factory ? ❖ Market or Bus Stand ? ❖ Factory or Museum ? Kendriya Vidyalaya Which is closer to Blue River ❖ National Highway or Railway Line ? ❖ Bus Stand or Market ? ❖ Kendriya Vidyalaya or Factory ? ❖ Factory or Museum ?

FA ACTIVITIES 1. Measurement of height and length of many objects using measuring tape and scale. 2. Measuring short distances using non-standard units of length. 3. Making a metre rope. 4. Measure some lengths and distances using metre rope. 5. Comparison of heights of different children and tabulation. 6. Quiz on different units and conversion of units of length.

Competency : Knowledge. WORK SHEET No. 1 1. Fill in the blanks a) The standard unit for measuring length is _________ b) 1 m = _________ cm c) 4 m = _________ cm d) 8 m 27 cm = _________ cm e) 500 cm = _________m f) 850 cm = _________ m ___________ cm Competency : Understanding Basic Concepts. 1. Estimate the lengths of the following objects and tick the right answer a) Length of a blackboard ( Less than 1 m More than 1 m ) b) Length of a cot ( Less than 1 m More than 1 m ) c) Length of a pillow ( Less than 1 m More than 1 m ) 2. Use a scale and measure the lengths of the following objects

WORK SHEET No. 2 Competency: Problem Solving Ability Work out the steps in your mind and write the answers directly in the box. 1) 44 + 22 = 2) 19 + 71 = 3) 48 + 42 = 4) 33 + 37 = 5) 67 + 33 = 6) 80 + 20 = 7) 94 - 22 = 8) 86 - 10 = 9) 49 - 9 = 10) 88 - 18 =

Thank You Prepared by Mrs. Sujatha Subhash Mrs. Sheena. T. K. Kendriya vidyalaya, Kalpetta