From the very first day of becoming parents we have tried to raise our kids in a bilingual home. I am from an English speaking home and my husband is from an Afrikaans speaking home so we have tried the one parent one language rule in our house. Both our kids are excellent translators but are naturally more at ease speaking English as that is what they hear the most and our homeschooling is in English. So to try and improve the Afrikaans a bit we have introduced some homeschooling in Afrikaans. This has mainly been some very basic worksheets done by me (not so easy finding Afrikaans books here in the UK). We do a lot of these where Pink draws a line linking the correct Afrikaans word with the correct English word or where she has to read the Afrikaans word and then write what it says (ie the correct number or colour the block in the correct colour).
I have also started using some of the blank packs which Cassie at 3 Dinosaurs has made. We have been working on the Dishes pack. I printed off the blank pack, wrote the Afrikaans words on the 3 part cards and laminated and cut them out.
These blank packs are great for a 2nd language, I have already started doing the animals from the blank zoo pack for the kids.