Baltashova Muqaddes Qallibek-qizi 2022. BOSHLANǴICH SINFLARDA MATEMATIKA FANIDAN SINFDAN TASHQARI ISHLARNING AHAMIYATI VA SINFDAN TASHQARI ISHLARNI TASHKIL ETISH . Journal of new century innovations. 11, 1 (Aug. 2022), 126–130.