Martha, nine, spent time with African school children seeing how the cash raised by her charity Mary's Meals is being spent in Malawi.
The schoolgirl and her family visited a remote village south of Blantyre where 450 children in a local school rely on the charity for their daily food provisions.
Lirangwe Primary School has received £21,000 towards funding the 'Friends of Never Seconds kitchen' which will provide almost 2,000 children with decent meals every day for a year.
Martha spent the day talking to the children and took some lessons with them.
Her dad wrote on her blog about the 'amazing' people the family were meeting.
"All going well," he wrote, "Amazing families we're meeting. Kids are all playing together. Mary's Meals making huge difference here. 6p a meal is all."
Martha's blog took the internet by storm after she was banned by her local authority from posting images of the meals she was served up at lunch time at her school, Lochgilphead Primary School in Scotland.
The council were forced to eventually overturn the ban after a wave of protest.
Excited Martha wrote on her blog before leaving for her trip that she could not wait to meet the children - and that she had some gifts ready for them!
"I have been talking to lots of people about going to Malawi. I am excited about it. I can't wait to meet all the children. I have packed some footballs and wind-up torches," she said.
And ever the blogging pro, Martha has been photographing and logging her food experiences and keeping her blog up to date even while away!
We think this girl is quite amazing!