Curently 4 year old DD is the favourite to leave 
I have 1x15 week old pup, 1x stroppy 4 yr old DD, 1x 9yr old DD, and 1x 11yr old DS. Husband working away from home, so just me, kids and pup at home.
Todays walk started off well, littlest on bike (with stabilisors) me holding dogs lead (normal short lead with collar). We got to the end of the street before I cracked and made littlest get off and walk as she had already nearly ended up on the road twice.
Littlest then walks at a snails pace, so we have to do the same, and are constantly stopping to wait for her. She keeps up a constant whinge of 'I'm tiireeeeeed' and drags her feet.
Pup is pulling like a train, not that I blame him cos I feel like running away too, but I cannot really concentrate on working on this as I have to watch the kids.
I was stressed, kids were all fed up. Oldest was trying to help by carrying the littlest, but I was telling him off as I didn't want to pander to her and encourage her to do it more.
Pup pulled so much, he was panting and coughing. By the time we got to the park, he was totally uninterested in treats, probably because he was thirsty. As this is his main reason for coming back to me, I did not feel confident that his recall would be good (actually it was fine
, so he was not left off lead for as long as usual.
The girls were left to play in the playground while he was offlead, but when we left, we had to do the same walk home 
None of us enjoyed it, and there must be a better way, but I can't seem to work out what it is.
I will remember to take water for pup in future, and wonder if a harness would be better than a collar for him? I would rather sort out the pulling altogether though.
I have tried littlest on scooter, but that is no better. I got desperate yesterday, and ordered a pushchair for her for really bad weather, or when she is extremely tired, but don't want to use it all the time as she has not had one for nearly a year before this.
How does everyone else manage dogs and kids? I now have alcohol, which is making things seem better, but would like to have a plan for tomorrow 