ขั้นตอนในการดำเนินงาน ขั้นตอนที่ 1เ

The steps in the operation. Step 1 to study the duration of lighting candles with all three types of geometric. 1. bring a candle, a white bar scene to melting. 2. filling the candle mold candle casting tied to all three types, and bring a candle that is melting, and then to enter it with the prepared mold with 90 ml volume 3 number of each model left to cool until it can be pulled out of the candle mold easily. Then cut the candle candle filling filling each 5 cm long. 3. make trial by candles in the designated area, which uses the A4 paper box so that there is a hole in the burning of a candle. 4. observe and record the results of the experiment. 5. Summary of operations

Steps in operation.Step 1 to study the period of the brightness of the candle with geometric three types.1. Put the candle white package to melt.2 wick. The candle mold attached to three types and the wax melted and put กับแม่พิมพ์ prepared with V 90 mL The model for 3 cubes. Leave to cool to be able to pull out of the mold candle is easy. Then cut by the wick wick each block 5 cm long3. The candles in the designated areas, which use the cardboard box A4 punch to make the air in the combustion of the candle.4. Observe and record the results of the experiment.5. Summary of performance