Georgia Tennant is making the most of her time with her young ones before school commences.MORE: Jools Oliver shares back to school photo of son River after expressing concernsThe 35-year-old actress, who is married to David Tennant, uploaded a rare photo of three of her children during an outing to their local park.WATCH: Georgia Tennant shares funny video of husband DavidAlthough it's not quite clear which kids were featured in the snap, two of the elder siblings were seen pushing