Think tac experiment

                                     THINK TAC DIA STETHOSCOPE  EXPERIMENT 

 

today i did think tac experiment for 7th standard students in that i showed how to make diy stethoscope ,and how to check heartbeat ,all students are did the experiment  

also students are did the experiment well all are enjoyed the activity and they will checked their friends heart beat also 

students will shocked when they observed the heart beat offer running ,because it beats pasty