Should I introduce my daughter to her first shower? she will be 4 in dec?

I am a single dad of 2 kids! 1 boy 1 girl. I was wondering if I should intro duce her to her first shower for a time saver! and if I was to do that because she is clumbsy should i shower with her to prevent her from slipping and falling and cracking a skull!! I personally think showers are faster and cleaner!! because your not sitting in your own dirty water!! plus like i said if your in a rush but need to get washed up a shower can be done in 5 or 10 minutes rather than a bath which takes about that to fill it up!! any opinions? and my son is still too young to be left alone in the tub so he isnt ready for the shower yet!!