Lesson 7, page 3, Promien swietlny*1*GPH_1B05_002Nf.wav#3#5000#12000#20000#
Lesson 10 page 3, bieg promieni w pryzmacie*2*GPH_1B08_002Nil.WAV#3#500#9000#17000#
Lesson 10 page 6, promienie w kropli*3*GPH_1B08_009Nf.wav#4#4000#7000#15000#25000#
Lesson 13 page 2 Promienie swietlne*4*GPH_1B11_002Nil.WAV#3#2000#7000#19000#
Lesson 13 page 2, Oko ludzkie*5*GPH_1B11_001Nil.WAV#0
Lesson 13, page 3, Wszystkie przedmioty*6*GPH_1B11_004Nil.WAV#1#31000#
Lesson 14 Page 3, Oko odbiera obraz*7*GPH_1B12_001Nil.WAV#1#15000#
Lesson 14 Page 3, Obserwator I widzi*8*GPH_1B12_002Nil.WAV#2#4000#8000#
Lesson 14 page 4, Badany przedmiot umieszcza się*9*GPH_1B12_003Nil.WAV#4#3000#6000#12000#24000#
Lesson 14 page 6, Obiektyw jest soczewka*10*GPH_1B12_004Nil.WAV#4#3000#5000#10000#18000#
Lesson 14 page 7, Glowna czescia aparatu*11*GPH_1B12_005Nil.WAV#1#7000#
Lesson 7 page 4, Zalamanie swiatla*12*GPH_1B05_005Nf.wav#2#4000#15000#
Lesson 7, page 5*13*GPH_1B05_006Nf.wav#2#2000#6000#
Lesson 4, page 4*14*GPH_1B02_005Nsym.wav#0
Lesson 5, page 7, obraz pozorny*15*GPH_1B03_009Nf.wav#0
Lesson 16, page 4*16*GPH_1C01_006Ncw.WAV#0
Lesson 16, page 4*17*GPH_1C01_007Ncw.WAV#0
Lesson 16, page 5*18*GPH_1C01_008Ncw.WAV#0
Lesson 17, page 2*19*GPH_1C02_003Nil.WAV#16#1000#7000#7500#8000#8500#12000#22000#25000#25500#26000#26500#27500#43000#45000#47000#49000#
Lesson 17, page 3*20*GPH_1C02_004Nil.WAV#1#17000#
Lesson 18, page 3*21*GPH_1C03_003Nil.WAV#0
Lesson 18, page 4*22*GPH_1C03_004Nil.WAV#4#4000#8000#10500#12000#
Lesson 19, page 2*23*GPH_1C04_002Nzd.wav#0
Lesson 19, page 2*24*GPH_1C04_001Nf.WAV#4#3000#5500#7000#10000#
Lesson 20, page 4*25*GPH_1C05_004Nil.WAV#0
Lesson 21, page 4*26*GPH_1C06_002Nil.WAV#1#32000#
Lesson 22, page 3*27*GPH_1C07_004Nzd.wav#2#5000#19000#
Lesson 23, page 2*28*GPH_1C08_001Nf.WAV#5#10000#15000#20000#24000#27000#
Lesson 23, page 2*29*GPH_1C08_002Nf.WAV#3#3000#6000#9000#
Lesson 23, page 3*30*GPH_1C08_003Nzd.wav#0
Lesson 23, page 6*31*GPH_1C08_008Nf.WAV#2#12000#17000#
Lesson 23, page 6*32*GPH_1C08_009Nf.WAV#0
Lesson 24, page 3*33*GPH_1C09_004Nf.WAV#2#1000#5000#
Badania w otoczeniu*34*GPH_1A02_006Ncw.WAV#0
Dlaczego ciecz zmniejsza siłę tarcia?*35*GPH_1C12_008Nzd.wav#0
Lesson 31 page 4*36*GPH_1D03_004Ncw.WAV#0
Lesson 35, page 3*37*GPH_1D07_002Nil.WAV#2#6000#14000#
Lesson 35 page 6*38*GPH_1D07_005Nzd.wav#0
Lesson 36, page 3*39*GPH_1D08_002Nil.WAV#2#3000#11000#
Lesson 38, page 5*40*GPH_1D10_004Ncw.WAV#0
Lesson 38, page 5*41*GPH_1D10_005Nil.WAV#0
Lesson 39, page 3*42*GPH_1D11_004Nzd.wav#0
Lesson 43, page 2*43*GPH_1D15_001Nf.wav#6#2500#4000#7500#10500#32000#37000#
Lesson 44, page 2*44*GPH_1D16_001Nil.WAV#0
Lesson 45, page 7*45*GPH_1D17_001N.wav#0
Lesson 45, page 7*46*GPH_1D17_002N.wav#0
Lesson 18, page 3*47*GPH_1C03_007N.wav#0
Lesson 25, page 5*48*GPH_1C10_006Nf.wav#0
lesson38 page 6*49*GPH_1D10_006Nil.wav#0